I have a 2010 GC8, and I installed the K & K pure mini put in it, and I couldn't be happier with the results. I've played it through an amp and a couple of times through a couple of different PA systems. It's a really nice, natural-sounding pickup. When I played through the amp, I didn't use a pre-amp, and it sounded good. When I played it through a PA system, I've either used an active DI or my Mackie 1204 as a preamp. Either time worked great.
It sounds good, and it's pretty non-invasive. You have to superglue the pickups under the bridge, but it's totally reversible if for whatever reason you don't want them an anymore. Also, it does not change the sound of the guitar itself as opposed to attaching things to the soundboard, having a battery pack bouncing around inside, etc.
If/When I ever buy another Taylor, I will always go with the full acoustic model w/out electronics or cutaway and put a K&K mini in it...anytime, every time.