For those who have bought the cube4you diys, do any of you find rubik's diys or the 3 by 3 rubik's studio cube better? Because i have tried to reduce the lock ups when cubing. I have eliminated about 70% of the lock ups by varying the tension in the screws. When i see speedcubing videos, i see that their cubes do not lock up at ALL. So thought of trying out cubes other than the ones from cube4you. Any recommendations? 