I don't know why Qiyi decided to make such amazing big cubes, but it's a nice surprise from their usual releases.
The Qiyi 10x10 Magnetic is as good as the 9x9 M even at its bigger size. It's smooth to turn, the corner cutting is quite good, and the smaller size for such a big cube is very welcome.
If I had to give a complaint, it's that the cube can feel very loose and fast out of the box, but it's nothing that can't be fixed. The issue is that some of the pieces can get stuck as you do Parity and it can lead to a few pops.
The Qiyi 10x10 M is an amazing, and as long as you're a bit careful you shouldn't have any problems speed solving this cube