This is my third v10. I own the UV 20-mag BC with springs, the AI version, and now the FE. This one is officially my favorite! And that's saying alot, considering only a few weeks ago I named the non AI version my favorite 3x3 (I have about 30). The feel of this cube after setup is amazing. It feels slightly lighter than the 20-mag BC, and so darn smooth! It also has a snappy/springy feel to it. The corner magnet strength is just right. It's super fast and effortless to turn, yet still controllable. I adjusted tension and elasticity to 3 &4, respectively and used FZ glide on the tracks. Love, love, love this cube. Awesome collab and kudos to Cubehead and The Cubicle!

The idea of a cube "outfitted with metal parts" in the core, steel grey internals, the collaboration with CubeHead, and even just the name "Ferrocore" all caught my attention when I first heard about the cube.
Then I saw a reddit post where they described the cube as just being core swap with a V9 and the "Ferro-" part of the cube was just screws. At the time I also imagined the Ferrocore having the old MOYU screw system from the V9. After seeing that post I decided to hold off on buying it.
Soon after Cubicle released a video going over the Ferrocore. There I found out about the extra modifications made to the Ferrocore, like the custom springs and the fact that they kept the V10 adjustment system. That was enough to get me to buy one for myself.
A couple days later the cube finally arrives. Packaging is compact and sleek. I take the cube out of the box, do my first turns and... it honestly felt awful. Out of the box the Ferrocore felt slippery and very blocky despite the modifications on the cube being an effort to make the cube more flexible. My first impressions with it had me pretty disheartened, but I still had hope.
Fortunately, I also grabbed a Yoo Lube Bundle along with the Ferrocore. One lube video tutorial (also copying Phil's 3-7 tension settings in the Ferrocore video) and a session of breaking the cube in later the Ferrocore starts to shine. On the Yoo setup the Ferrocore is so soft and smooth. The modifications made in this cube really put in work to create a nice balance between flexibility and blockiness/control. My main gripe at this point is that the "Ferro-" name and calling plain old screws "metal parts" is a bit misleading; I was expecting a full metal spider core or a metal ball or something. At least it makes the cube more robust and flexible compared to the original V10. Also props to Cubicle for making it clear that their video would be biased, so their honesty and clarity in the video kind of cancels out the misleading name for me. Another small nitpick is the steel grey internals are hard to see since the edge and corner pieces are not capped like in GAN or Tornado cubes, but that is due to the design of the V10 and the steel grey colored internals aren't really the main highlight on this cube anyways. Overall a really comfortable cube with a somewhat misleading name but makes up for it with good modifications that help it stand out from the other versions of the V10.

TLDR:
Sees Ferrocore on the website for the first time: "Yoooo!"
Hears that the Ferrocore is just a core swap: "Noooo!"
Sees Cubicle video about the other mods done to the cube: "Yoooooo!!"
Gets the cube and does first turns in stock setup: "NNOOOOO!!!!"
Gives the Ferrocore the Yoo lube setup: "YYYYYOOOOOOOOO!!!"

This is my favorite iteration of the wrm v10 yet. I’ve tried the maglev, spring, and picube editions of this cube, and the ferrocore tops all of them for me. The increased flexibility is great, and the added durability features of the red 20 magnets ball core and the metal core arms are a nice added bonus. The range of tensions is ideal in my opinion, as it gives the best range of usable settings of any of the other versions I’ve used. I would’ve preferred UV personally but the matte plastic wears in relatively quickly and gives a nice glossy finish. Props to the cubicle team and Cubehead for collaborating on innovative updates to an already awesome cube!

it’s like if my favorite cubes had an unforgettable experience together and made a baby.

this is a really enjoyable cube that just became my favorite, and i don’t even really like my wrm v10.

i set it up with dignitas and gravitas and tensioned to 3/3

Haven't cubed in a few years at this point so I picked this one up after randomly coming across the Youtube video. Out of the box it was on the loosest elasticity/tension settings and it was very fast. I set the cube up with angstrom gravitas on the tracks, and dignitas/fz calm on the pieces. Not really sure how to lube the core on this as I'm unfamiliar with the design. I changed the settings to 4-4 as Phil said in the video that the best settings are towards the middle and you can change them to your preferences from there. I ended up with 6 on elasticity and kept the 4 tensioning.

After breaking in for some time I enjoy the cube a lot. It's much faster and lighter than my previous cubes so I have to turn lighter with it but it's fun to use.

Out of the box , it’s already very fast (not too fast) while having very good controllability, just like what Phill Yu says ,’ if you are using the cube for once you won’t be liking to put it down
Lastly , I wanna say to cubehead once again ,’ Cubehead, you cook VERY WELL this time😎’

Got my pr average in a comp with this cube, fast and high quality

I'll start off with this - I liked the original V10. But there were a few issues with the cube that made it incompatible as a main for me. For one, it was too rigid - I felt the cube was not flexible enough and often felt too blocky. Some people may prefer this, however I am not one of them. The cube was also quite fragile, with numerous reports of the ballcore snapping and not being as durable as the V9's ballcore.

This cube fixed ALL of those issues - replacing the V10 BC with the V9 20 magnet BC made the cube less fragile, and the components connecting the center pieces to the core being made out of metal made it more durable - as well as more flexible.
The cube being more flexible means it has more room to breathe, it is not nearly as blocky as the original V10 and that is an improvement for me.

The steel gray internals are also very neat, and give this cube its own distinctive look compared to many other cubes on the market.

I set it up with Cubicle Mystic + some DNM 37 and the cube was quiet (compared to most other cubes I have mained), fast, and buttery smooth. It is now my main.

My only gripe with it, albeit a very small gripe, is matte plastic instead of UV Coating. However, the matte plastic feels quite nice, and it wears out eventually, so that doesn't dock any points.

The normal WRM V10 is my all-time favorite cube, but Moyu's UV plastic gets really slippery when my hands get sweaty. I was hoping Moyu would release a matte version, so as soon as the Ferrocore came out I ordered one right away.

Due to the slight differences in internals between this and the original V10, simply copying my settings from the V10 did not work. It took around an hour of playing with tensions to find what was ideal on the new cube, and it has been flawless since then.

With the yo cube setup it is good with no setup is it bad kind of