This cube turns fine, and works well. However, if you plan to be speedcubing, you might as well just get a SS or MoYu 5x5.

The QJ 5x5 is only better than the Rubik's brand to say the least. They both use the same mechanism; however, the QJ performs a little better. The stock stickers were dull and not pleasant during solving. Corner cutting is terrible, lock ups happen everywhere, and it is just a pain. I would not recommend this cube.