My favourite is a Hughes OH-6 Cayuse "Loach", my initial interest was fueled by a friend who is female Kiowa Pilot out of Fort Rucker and her insistence that I read "Low Level Hell" by Hugh Mills.
My favorite place on Fort Rucker is the Army Aviation Museum, where I have sat and admired Mr. Mills's Loach which is on display. The perfect spot to take a copy of Low Level Hell, read again, and imagine.