I have a 53/39 standard double and an 11 x 25 stack. I used to have a 12 x 23 stack but actually needed to drop from 12 to 11 for great top speed on the flats. Speaking of flats, that's what my terrain is like. I don't have any giant hills to speak of, but I ride in the unrelenting wind, which is like a "horizontal hill." The only thing I have a triple on, is my mountain bike. My advise would be to go to a compact if you need a better gearing choice for your terrain, but I PERSONALLY wouldn't go to a triple unless I was pulling/carrying a heavy load in super hilly or mountainous terrain.