I've always wanted to try a Hasselblad, veered away several times to Bronica/Mamiya MF's because I was afraid of the cost of lenses, backs and accessories. So if a casual shooter with a home darkroom and quite a bit of experience using Bronica SQ's and Mamiya RB's wanted to add a decent used Hasselblad, which of the 500 series would you gentlemen recommend as the most sensible and reliable model to look for that wouldn't totally bust the post-Santa wallet?