I got this cube along with the 2x2 MS puzzle and I really liked that one and while I don’t dislike this one it’s not one of my favorites. 4x4 puzzles are notoriously difficult to get right especially at a budget price and QiYi did a mostly good job here, however I run into lockups quite often while I’m solving and especially if I start turning fast and I have experienced a few pops in the center pieces and the edge pieces in the past if turning too hard, The cube also has a gritty sort of feeling when you turn it which isn’t the best, however for a first 4x4 it’s not a bad budget option if you want a cube to learn on and since 4x4 is my favorite to solve I still have fun with this cube, but overall I would recommend saving a bit more for a better 4x4 or looking towards a different budget 4x4 for an entry level cube