Don't forget the 2000 series Hasselblad bodies that had instant return mirrors and focal plane shutters, if you want to play around with odd lenses. They can be a lot cheaper than the Rolleiflex SL/SLX bodies, and for the most part they're newer with better parts supply. And they have a faster top shutter speed too! (1/2000th). I'm actually contemplating getting one and/or a Kiev 88 so I can play with weird lenses on the cheap (the Kiev fisheye is a super-bargain in comparison to the Hasselblad 30mm).