I was going to say something along the lines of what Pelion offered. For myself, I play @ PokerStars, and found the transition up to 10NL odd. It was as if the game got easier, I think due to the fewer players to a flop.

I strongly recommend playing @ 2NL for a while before you move up though. I played there for two months and learned a lot, which will help you that much more when you move up. Hands played experience is such an important thing, and it doesn't matter where you get it from because when someone has a good hand they'll bet it, when they have a bad hand, they won't.