Trekkaty - You can run it through a gear calculator - but a compact double with an 11-28 is not that different from a triple with an 11-25. You do have bigger gaps between the gears. But there are 12-26, 11-27, whatever cogs that can be done as well. I don't notice any problems with finding the right gear, but that's just me - others seem to miss certain gears.

I kept one bike a triple & one bike a compact double - and really, I wish I'd gone compact double with both. I just have an easier time with being in the right gear at the right time on the double, and you don't have to worry about cross chaining as much as you do on a triple - a compact double will generally let you get away with being in the 50 chain ring on the front and the 28 on the back. (I know, I'm bad). And I actually climb better on the compact double, which might be related to the bike geometry or something.

But at this point, it's too expensive to bother converting the triple to a compact double (I sold a bike with a double that I could have just exchanged the parts from) - so that bike will likely stay a triple forever, and hopefully I never meet a hill that I require all those gears.