At first, I thought it turned pretty smooth besides the jams here and there. Some pieces ept popping out, so I found myself smacking them back into place. I wish V Cube would make a V cube 4 already. It was a little stiff here and there. Can be frustrating. Not bad for a 4x4x4, but I'm trying to find better.I got pissed because the other night I was doing some speed solves and I was getting close to getting under 3 minutes finally, but suddenly it snapped and like half the pieces came out. It's totalled. This cube is finished. I'm pissed. If you don't cube as much as me (like maybe one to five solves a night) then you're straight. Get it... But I solve cubes literally hundreds of times in a day b ecause it's so addictive. This is not hte cube for the 4x4x4 realm.