I went through this same thing.
I went to the local gunstore. Fondled the P99C (AS & QA), the Glock 26, the XD compact, USP compact, and whatever else I could think of.
I went away with the P99C AS and was fairly happy - for a while. I had always hated Glocks, so it wasn't too hard of a decision at the time.
I quickly found that getting good leather (or kydex) sucked. Finding accessories (specifically sights) also sucked. One problem is that the trigger guard on the P99C was changed to be different from the full sized P99s. The P99s have changed to the newer type now (I think) but the manufacturers still aren't on board AFAIK.
I also found that the mag release was difficult for me to use. Now, I've shot extensively with P7's so I thought the guard mounted flipper would be right up my alley, but this thing was very difficult to move. They have since redesigned the release and while I'm sure it works, it looks ridiculous to me and I think my fingers would be in the wrong place.
I also wanted something that I could take out, use and abuse and not feel guilty about. I wanted a wide range of sights to try out, and I wanted to have leather and kydex readily available. Finally, I have started to do a good bit of training, and I wanted to have something that was COMMON so that if the thing ever broke at a class or anywhere else, I could get parts quickly and cheaply.
The P99C just didn't meet any of those. So I sold her off and grudgingly bought that ugly piece of chunky plastic Glock 26; and... I love it.
I should have bought one years ago. GOOD leather is EASY to find for it - Milt Sparks VM2's and SSIIs are no problem. I have a really nice set of Custom Glock Racing Operator sights on it. Mags are cheap and plentiful. I run a G26 in it and keep a G19 in the spare carrier. And best of all, the thing just runs and runs and runs and runs. Clean, dirty, wet, muddy, whatever, it just goes bang every single time I pull the trigger.
I guess my focust has changed to being striclty utilitarian oriented. And this is the right tool for my toolbox.
Edited to say:
Yeah, the AS trigger is SWEET. But then I like traditional DA/SA guns. The decocker is weird, but wasn't really a problem for me. The QA was OK, but to me, not any better / worse than the Glock. It is nice having the magic button on it so you can decock it without having to pull the trigger like on a Glock just to field strip it. The flip side is that magic button (if somehow pressed while fighting off an assailant) puts the gun out of commision. You gotta bring the slide back a little again to get it up and running. Glock has a similar issue in that there is no restrike on a dud.
Just get it over with, go to the darkside and buy the Glock