Obviously since this is a 7cm cube and, as such, is not competition legal, it's not trying to be the next latest and greatest speedcube. That being said, it's still pretty fun to play with and solve.
The turning feels like most other shengshou puzzles, super smooth and really nice. However it is a really fast cube, almost too fast, sometimes the flicking will shoot the layer almost 180 degrees. I assume some higher weight lube to the core will fix this. The cube is harder to take apart than other cubes, so I have yet to try lubing it.
The cube as a whole, to me, feels like a supersized guanlong. They both have a very similar feeling plastic and both corner cut about the same. (Which is to say, below average in both regular and reverse corner cutting) Because of this, minor lockups can occur while solving the Big Legend quickly.
Overall, It's a really fun and cheap addition to any cubing collection. It's definitely more of a novelty piece but it can still preform really well. The stickers a big and bright, and look really nice. It's a really different feeling solving supersized puzzles and proves to be very fun.