I got this SQ-1 out of curiosity cause I've been to try it since I first heard about it's coming soon release a few years ago. After doing a few solves it's not that super good. Due to the lack of corner cutting this this puzzle doesn't have super smooth and fluent movement. If you were to do this alg /(3,0)/(-3,0)/(3,0)/(-3,0)/ you'll be getting some tiny lockups. Also the turning is a bit crunchy. Overall this is a decent SQ-1 but not going to be a super good SQ-1 for a sub-15 solver. You're better of getting a MoFang JiaoShi MFSQ1 that's a bit cheaper. But for what it is it can be a decent SQ-1 to learn on.