Long time Grado Fan.
I have had my SR325is for a few years now. I never really got into using them that much. The sound is terrific, I think it is the comfort factor that gets to me.
Ii used the regular pads it came with, matter of fact have gone through two pair while using my SR80 and the 325's.
I used the comfy ones for about 4-6 months and just recently did the reverse hole mod. They sound great but hurt my ears after a few hours.