Originally Posted by
pgjackson
You might miss it at first if you do a lot of climbing, but you will get over it and get stronger. What you will not miss is all the FD grinding and constant shifting. The double allows you to use the entire cassette and with a 11-32 gearing you won't have any problems getting up hills.
I just moved from a triple to compact double. I have found the opposite to be true. In the middle ring of my triple, I could use all the sprockets in my cassette. But now with the CD, I can't use the 2 smallest sprockets in the small ring with out the chain rubbing the side of the big ring.
I succumbed to a CD a few months ago after getting a new frame with a PF30 BB. I thought (wrongly) that I would be able to use my current triple with an adapter. BB30 road triples are rare to extinct. Yes you can get the same range in a double, but I miss the close gear ratios I was able to run with a triple. I find I do more FD shifting with the CD, but I'm reserving judgement until I get more miles and more experience.
I would get the triple if you have any doubts. Triple shifters work with a double, but not vice versa, if you decide to change later.