I have the oppertunity to pick up two hasselblad bodies with a 220 back and waistlevles for around 500. I also have the oppertunity to pick up a pentax 645 with 2 lenses (a fast 80 and a fast 135 I believe but the seller is my neighbor and just moved so the camera is buried for a while yet so not forsure) for 400. I am not sure which way to go. The hasselblads are.. well hasselblads and I would love to have one, is $500 for two 503cx bodies and the back a good price? I know the pentax would give me more bang for the buck in terms of immediate useability but I do have a mamiya med format that I shoot and I have other cameras to play with as I build the hasselblad kit. Thoughts?