Do the limits matter?

I have been all over Full tilt - I have played the 10 25 cent tables for about 3 months while I learned the game a year ago. i had managed to make my way all the way up to the 2 4 NL game. fun fun fun. The quality of the game is much better there then it is at these raggy limits I have been playing. So why did I drop down. In a word, Bankroll. I play the same game in the 50 cent dollar game as I would in any 2 4 NL and I am capable of making a hundered a night - At this pace I will be back in the big game in 2 weeks. The action in the 2 4 NL game can really scare the crap outta ya If you dont have the cash to play it. So for now I will grind it out, win some tokens and see if I can pad the bank roll.