I have spent a lot of time recently drooling over medium format film cameras. I know if one is interested in the dreamy lomo-esque world, $25 USD will buy a plastic 120 camera. An old 6x6 folder can be had for around $100 or.so, and a mint condition Mamiya 645 for around $300 (that was my choice). Then there are the big dogs, like the Bronica RF645, Mamiya 7, and Fuji GF670. Those will run you a minimum of $1,000 with lens in the case of the Bronica, to over $2,000 for the Fuji. I'm wondering what the huge jump in price brings. Better build quality? Brand recognition? I have considered setting aside some $$$ for a premium camera, but Is the IQ really that much better?