The Saitek Cyborg 3D is good. Twisty stick for the rudder, throttle lever, and 10 programmable buttons for flaps etc. all for £30 or so. You can get a USB one too if you need.
Cheers DB6
PS one downside is if you play Quake or anything like that with guns etc. and like most people you get a bit involved then you'll probably break off the trigger.