I can tell you from experience that the Ultegra triple works very well. The shifts are accurate and reasonably fast. Once mine was setup, I never had to adjust it. Lots of overlap in the various gear ratios, so there's little need to cross-chain. When I switched from a triple to a compact double, I noticed myself shifting the FD a lot more. In terms of the lowest available gear ratio, there isn't a whole lot of difference between a road triple and a compact double; anything I could climb with the Ultegra triple I can also climb with a compact double.
I'm not a huge fan of Bontrager components, so I'd probably stick with the Ultegra triple...