Cuberspeed YiSheng 3x3x4 Fully Functional Cuboid stickerless Cube

The 3x3x4 is a really good puzzle. The tension on the turns is a little bit tight but it turns pretty smoothly. I've had this puzzle for a long time and used it extensively and it has held up well so the build quality is quite good. It's stickerless too so no worrying about stickers peeling off. Overall it's definitely easier than a 3x3 since you can only do half turns on vertical layers which reduces the number of possible combos, but you will need to learn some new algorithms as a lot of 3x3 algorithms will not work. I definitely would recommend this puzzle for anyone who enjoys twisty puzzles and is looking for a good challenge.

Very fast and fun to speed solve. The center cap popped once but it was easy to put back in. Definitely the best 3x3x4 out there

Broke as soon as I took it out of the box

It's a nice cube, however it is not built for speed. The first non-precise turn will result in about 6 pieces breaking off. It does go back together somewhat easily, but that was only with 6 pieces off... if it would have fallen apart more, I'm not sure I would have been so lucky. Just be warned that it does break apart a lot easier than it should.

Optimal for its purpose. Not for speed cubing, but an amazing puzzle for collection. Perfect cube, currently my favorite, and I have about 30 different puzzles

il tourne tres bien ,peut ajuster la tension j'adore