I'm sure the YueXiao must be a great cube. Smooth but not super fast: Tanglong. Smooth, can be fast and very cheap (but may corner twist a little bit): Thunderclap.
EDIT1: By the way, to avoid double posting, my own question: I have a Dayan 2x2 but it's the new plastic and it's a bit bumpy and I have very tight tensions to avoid pops so even though it's very good it's not perfect. I also have a LingPo and a CB stickerless but both of them have those nasty internal catches so, not usable. For the same reason I would discard the YuPo and TangPo. So, I've heard the old Wittwo was also very good, maybe even on par with the Dayan. Was that the "Type C 2x2x2 WitTwo"? Can anybody recommend it? Thanks!
EDIT2: I was about to order a Moyu Pyraminx and I just saw a "new?"
Cyclone Boys Pyraminx. Anybody new about that or has been able to test it already?