Getting a triple was best thing I ever did, I'm a "purist" at heart but I'm not getting younger and pushing a "double" up hills was too much on the steeper hills so I took the plunge after being talked out of buying a "compact" at the LBS and bought a Trek Madone with a triple fitted.
The difference it has made is incredible, I have lower heart rates pushing up the hills, I've more than doubled my speed up some hills, reduced the time climbing some hills by well over 50%, my knees do not hurt so much now pushing the big gears and when I get to top of hills instead of turning my lungs inside out gasping for breath its now a case of getting into the higher gears ASP and race away, in fact I've virtually broke every timing on all my usual routes and rewrote "the books".
The difference it has made is incredible, I have lower heart rates pushing up the hills, I've more than doubled my speed up some hills, reduced the time climbing some hills by well over 50%, my knees do not hurt so much now pushing the big gears and when I get to top of hills instead of turning my lungs inside out gasping for breath its now a case of getting into the higher gears ASP and race away, in fact I've virtually broke every timing on all my usual routes and rewrote "the books".