I'm one if the few that like the stock gearing (sprocket wise), don't like the extra chain rub noise some bikes make with the 14t, and don't like the motor screaming on the freeway.
I ended up going from a 15/41 to a quick change 15/42. Not much of a difference at all. Maybe about 100rpm high than stock.
At least with the quick change carrier I can just swap it out for not too much $.