I did a hand-scramble this time, because using a normal scramble would take over 3 minutes.
It's the first sub 4 I got on this puzzles til now, but I guess sub 3 should be possible with a bit of practice.
I ordered a gold bump cube on amazon recently: http://www.amazon.com/Cubetwist-3x3x3-Golden-White-Mirror/dp/B006UWD80Q
The reviews it has are both good ones. However my cubies are really loose and the cube locks up severely when trying to solve; like lock-ups so bad that cubies feel like...
