I have used both a triple and a compact double recently. Although you get nearly the same range from a compact double as from a triple, I find the gear change progression easier with a triple. I find myself shifting back and forth between chainrings more with the compact double, since there is not so much overlap between the gears there. On the triple, I tend to keep it in one of the front rings more consistently and just shift the rear. Also, when shifting the compact double between chainrings, it requires a shift of about 4-5 cogs to get a single gear increment change, whereas the triple only requires about 3 cogs to be shifted. I have the Shimano R700 compact double and an Ultegra triple, and find that the triple shifts better between chainrings than the compact double.

I vote triple.

Ted