Schutt, I've been using CH sticks for years with medium size hands (3 1/8" length of middle finger, 7 1/4" tip of middle finger to wrist). The 8-way hat on the Fighterstick is a bit of a stretch for my thumb, which is why is does things like gear, tail hook, fuel tanks, etc. The 8-way on the ProThrottle is perffectly positioned for views. And if you're used to using the pseudo-rudder on the X45, you'll want pedals.
You wrote that your X45 wasn't smooth enough. Is it spiking, or just too touchy? If you like the stick, maybe you could just replace the pots and save a bunch of money.