In this video I show some cubes that I bought from Champion's Cube Store.
The twisty puzzles are a stickerless Diansheng 2x2, Ayi's 4x4x3 cuboid, a Witeden 3x3x4 Mixup Plus, and a Witeden 4x4x3 Mixup Plus.
The Diansheng 2x2x2 is a decent speed cube, at least to me anyway, when turning it it has a dry, scratchy feeling with a nice crispy sound. Corner cutting is average, and reverse corner cutting poor.
Ayi's 4x4x3 is quite a fun puzzle to solve, it's like a 4x4 version of the 2x3x3 domino floppy. It doesn't shapeshift.
I've not solved either of the Witeden Mixup Pluses yet, but when scrambling one of them I didn't put much thought into the scramble and quickly ended up with a lot of bandaging.