Sega pads work a treat! I just hauled one out of storage to plug into my A1200T after stumbling across an old copy of Alien Breed - Tower Assault (YAY!!
Never realised this before, but the '3' button (or the 'C' button on some pads) activates the 'retreat mode' so you can run backwards while lasering the scales off the nasties!!
Go on, give AB-TA a bash!! You know you'll love it