Ya move up, ya move down, sometimes you don't move down, sometimes you keep moving up. It's still NLHE. It's still micro, and they all suck. Just keep working at not sucking. When your beating 100NL's there is no difference between $4NL and $25NL. Just keep learning and killing. play the stakes you beat and keep trying to beat the next one. You will be surprised how easy 10NL is after a failed attempt at $25NL.