Question regarding a front derailleur
Hi. I'm new to the biking world, have found these forums to have a wealth of information, but I can't seem to find a suitable answer for a question I have regarding front derailleurs.
I ride a cross bike, and it's got a compact double front crankset (46/34) and it's got a 105 (5500) front derailleur on it. I like to fuss with things, am a bit of a gear nerd, and have found that you can find parts pretty cheap on craigslist with which to upgrade, so I've been converting most of the components I can over to dura-ace 7700. The 105 FD shifts, well, ok. It works, but it takes a minute, and I can't have any pressure on it at all when shifting. So, I'm looking at changing it out.
Here's my question. With a standard road derailleur you're looking at a 14 tooth drop from 53 to 39. On a "normal" compact double, you're looking at a 16 tooth drop from 50 to 34. My bike has a 12 tooth drop from 46-34. I've been told that a compact double front derailleur would be smoother for me, but it seems that it's going in the wrong direction I want it to.
Am I missing something here? Which derailleur would work best with my 46/34?