i love this cube but i cant find 2 in ternal pieces they got lost on my black carpet and i cant find it

So when i got this cube, I noticed a red center was crooked. When I turned the layer with the piece on it, it caused a lot of catching. It was usable, just annoying. After a few solves, the first two layers blew off and pieces were absolutely everywhere. After I found the pieces, I reassembled it. During reassembly, I noticed the red center that caused the catching was not cut properly. So, while I finished putting the cube together, my dad fixed the piece. Now, fully reassembled, I do the first turns. Turns great. After I twist every layer, I find the green layer to be completely unusable. My dad said to put it back in the box and we'll return it and get a new one. But then, after an hour or so, I remembered that the green side was the last one I assembled. It turns out I put a piece in crooked. So, when assembling a bigger cube, "good enough" is never good enough. It's gotta be perfect.
But, now that i fixed it, it turns great, I adjusted the tensions, lubed it, and now it turns amazing, good corner cutting, smooth with a slight crunchy feel, which is how I like my cubes. Besides the large inconvenience at the beginning, it's an amazing cube and I certainly recommend it.

It's not very fast out of the box. It took a while to get here, (but it's probably because there was about 35 inches of snow where it got shipped from at the time). I got this cube because I unassembled my Shengshou 4x4 (I couldn't reassemble it) and wanted a replacement. I would recommend it to a beginner cuber, but professional cubers probably wouldn't want this because It isn't very fast at all. Overall it's a decent cube. If I still had my shengshou 4x4 I would be using it, but whatever.

I recently recieved multiple YuXins just to see if all had stiff inner layers. What i recieved were three cubes WITH stiff inner layers, and one WITHOUT them. I have to say, the inner layers make it so much harder to solve, especially when doing r and l moves. However, i have since lubed the one without with silk, and it is just great. Honestly, i wouldnt take the one out of four chance, and i would also just get a YuXin Blue for the same price.

I originally got the Yuxin 4x4 just as a replacement for my Qiyi Storm that broke. Great price btw. Out of the box it felt nothing like my Storm, and I wasn't sure if I'd like this cube. It felt a bit too loose for my liking. I planned on tightening it, but never got to it. Over time I got used to the loose feeling, and my turning style eventually adapted to it and it became more controllable. It may pop internal/external pieces when using rough turning and I wouldn't recommend lubing it since that will just gum it up a bunch. Unless of course you like your cubes like that.Overall, I would recommend this cube for beginners to intermediate solvers, however if you plan on spamming TPS, be prepared for the pops.

while tensioning it, a piece broke, so i'm a little bit frustrated, furthermore I have a competition next week and if I can't repair this I will not compete for 4x4

This is my first 4x4, and it is very nice, it's outer layers are nice and fast. My only complaint is with the differing turning speed of the outer and inner layers, I can't just flick it because they will be at different positions. If that is fixed, this would be a very good 4x4 for a pretty cheap price. This is my first 4x4, and it is just fine for me.

I just got this cube only yesterday. 4/16/16. It popped on 14/17/16. Barely had it for a day. I would not suggest buying this cube, but if you do tighten it up. When I opened it up, it felt really loose so that's why it popped, but I don't know to put back together a 4x4 Rubik's cube so...

The outside layers, and the corner cutting is great. However the inner layers took a lot of force to turn. I sanded the inner layers and the inside layers became pretty good. Definitely recommend thins cube.

I took this cube out of the box and right away it was my main. It came a little over lubed but with a bit of breaking in I think it's the best cube.