As self-proclaimed owner of $25 and (for this month) $50nl, I'm gonna let you in on what I've noticed over 30k hands at 50nl.

Postflop aggression (especially when a villain raises) is damn near off the charts. C-bets (and more intelligent ones, not .25 into a $3 pot like in $25nl) are thrown out there like rocks in a stone quarry. For this reason, it's a little harder to stick around in those drawing hands for a nice price. Preflop aggression is usually taken a bit more seriously at this level...and after 30k hands my experience has been that shorties are for the most part still pretty easy money.

Personally I didn't make the move until I had over $2k, but I multitable heavily. There is still some pretty bad playing going on at $50nl, but you'll run into a little more friction.

I've seen a couple of your hands, but nothing really sticks out in my head. Take a shot if you want, don't be afraid to move back down...bankroll management rocks. There, I'm spent.