[Big Limpin']

What is the skill difference between the "average 55er", "average 109er", and "average 215er"?

Edit: let me elaborate to clarify what i am looking for...

-What common mistakes are less prevalent (and thus less expoitable)
-Can one have more success w.r.t. defining a tighter hand range from prior action in the hand as BI increases?
-Could you mention some areas of your game that you thought were solid, but found that you were leaking when moving up?

...that kind of stuff. Specific examples will be appreciated. Myself, i havent really ventured above the 55s, but can see myself taking some more serious stabs at the 109s in the near future, and would like to be prepared for how they play differently. And by extention, what would moving up an additional level be like (distant future).

THanks in advance !

BL'