I have no issue with P3D. I've had it installed a few times since v2 was released, and have had (and let lapse) developer subscriptions a few times. If they continue to keep moving forward the way they have been, I will seriously consider switching at some point.
However, quite simply, I have no real strong urge to switch. I'd be switching simply for the sake of doing so. I've happily maintained my heavily-customized-via-symlinks FSX installation for quite some time now, going on two years I think, and everything is running really, really good. I lock at 30fps, and manage to maintain that in 99% of my flying, across a wide variety of payware aircraft and scenery. No stutters, no hiccups, no crashes, just start and go.
If I had problems with FSX, or if there were features strong enough to make me want them, then I'd reconsider.
Also in the back of my mind is some of the scenery that I've installed... My latest region to get a full 'makeover' is Hawaii. Installing the photoscenery, airport packs, FSDT airports, separate freeware autogen, and then making it all work cohesively together was a time consuming task. I have several regions like that were I have nearly every enhancement possible, with the time invested in making it all play nice together. I better have a damn good reason to do some of that over!!
