I have T. flight HOTAS X and i have to say that the small number of Buttons is not the best, but if you use 5 Buttons as modificators for the Coolie Hat (like I do) you are ok with almost the complete hotas of the A-10. There only lacks a mic switch, a boat switch, pinky switch, and airbrakes. But these aren't that important so i have them on the keyboard. My hotas covers MMCB, looking around, CMS, DMS, TMS, SLEW, COOLIE, TRIM, CHINA and left throttle button. And of course weapon release and fire gun.
Regarding TrackIR: Also i have mapped looking around to my stick, it is much better to have TrackIR. As i dont have enough money for a TrackIR i got a free one! FreeTrack allows you to have a HeadTracker almost for free. I am using an unmodified 10€ Webcam with my self-crafted 3-Point-Cap using white LEDs from Conrad. Make sure the LED emit their light in a wide angle so your can don't loose track if you don't look exactly at your camera.
Oznerol