Welcome to the Speedsolving.com, home of the web's largest puzzle community! You are currently viewing our forum as a guest which gives you limited access to join discussions and access our other features.
Just received 100 MF3RS. Price / quality of these cubes is really good. I can average sub-9 without any big problems.
I would not go as far to say they are a competition to cubes like the Valk 3 or Gan Air. It is too locky for that, I think the springs are a bit too weak as well. But it is certainly a good cube, and great for demonstrations, as giveaways or multiBLD.
Extra handy thing: corner twists are really hard, so you don't have to be scared non-cubers give you an unsolvable cube.