I just finished my partially-magnetized YJ YuFu, with 4x2 N38s from Gaussboys. I just magnetized the edges, because I couldn't figure out how to fit the magnets in the corner pieces. I don't know. I think it might be better than it was to start with, but to be honest I was hoping for a stronger magnetic feel. I'm still getting some catching and popping on the inner layers, and layers don't stay aligned the way I was hoping. My initial review of my Aoshi was similarly nonplussed, and as that has broken in I've gotten pretty happy with it, so this might turn out fantastic, but initial impressions are meh. I would happily trade it for an un-modded Yuxin Red or QiYi Wuji so I can take a second crack at a magnetized 6 or 7.
E: have you ever had a cube that felt terrible to scramble, but when you start solving it everything works together and it's fine? This is the opposite. It feels great scrambling, not so good when you start to solve it.