I'm probably not qualified to say much about it, but I have both the Shengshou and the Dayan+MF8. The Latter cost more than twice as much, and out of the box was extremely stiff. I took it apart entirely and lubed it with CRC. In the process I noticed a LOT of stray plastic that needed to be trimmed off the core pieces...just shoddiness I wouldn't expect for that price. I loosened the tensions, and the cube turns much better, but now it pops a lot. Maybe there's a happy medium, but it was such a pain to reassemble I don't want to take it apart and try again...especially since the Shengshou was just fine right from the start.