Party $50 vs. $30; Stars $50 vs $30

[Shorty35]

I have a 37% ROI with 250 tournies at the $30 level (over 200 of these at Party, not stars) -- will I notice a big difference in play at the $50 level? In the handful of $50's that I have played (14), it doesnt seem too much different other than the fact that you are less likely to get an idiot who hands you his chips at level 1 or 2 (which is a pretty big difference).