If you get too good a GH3, will that spoil the rest of the series for you?

Just wondering, seeing as how most people have been saying how GH3 is the most difficult yet, If you get to the level of 5* expert songs with ease, will this mean that you potentially have little future challenge?

im saying this because apparently GH:Aerosmith will be easier, same with rockband, if this is the difficulty peak, is it worth getting to that level (i'm on 5* ing most songs on hard, 1/2 way through expert)

I honestly thought GH3 was easier than GH2 due to the timing differences. I was able to 5* every song on expert within a week on GH3 and i still have about 5 left to 5* on GH2. But yea rockband is definitely easiest out of them all, as i 5* every song my first try excluding run to the hills and i found guitar completely boring since it was so easy so i went to drums.

^^ Haha yeah this is my first GH game and its hard but i got better

i still cant beat raining blood on hard, any tips its also my last song on hard??