1 tooth change in the rear made a big difference for me
I went from 48/16 to 48/17 and it's night and day to me. I find myself happy on flats and pedaling a little faster then I'd like downhills. I think one of my problems is that I'm not used to the RPM's per speeds yet since I just swapped this morning.
I can skid while over the saddle now too and I'm 210lbs lol