Hey PC, I've been using a Thrustmaster Cougar for a couple of years now. Yes, I've had to replace all the pots in the stick and the throttle, however, they were provided to me from thrustmaster free of charge. Yeah, kind of a hassle but I really love this setup. There's just nothing like the feeling of cold metal in your hand. The heft, the metal buttons, the fact they dont slide around on my desk when I'm bankin and yankin, all make this stick worth the occasional soldering I've had to do. I also got a set of hall sensors to replace the pots in the units, and as soon as these pots start to wear out I'm going to replace them, making them the last I'll have to replace. Here is the website for those kits:
http://cubpilotshangar.net/
Depending on how deep you wanna get in to this, the Cougar programming possibilities can be down right dizzying. You can, of course use it as a simple direct X unit as well. Hope that helps! Happy trails! - Sledge