I'm looking into purchasing a medium format camera. I'm interested mainly in 6x6 format, but i'd be alright with 6x7. I'm on a tight budget, so i've been looking at a TLR, particularly the Mamiya C330. Its interchangable lenses seem perfect for what i'm interested in (portraiture) and the quiet shutter and durable construction also catch my interest. I've not ruled out SLRs, however. Hasselblads seem too expensive, and although i've seen full kits with body, lens, WLF & back for around a thousand dollars, that's still more than i'd like to spend. I've heard that used Bronica cameras offer decent quality at an appealing price, but i'm unfamiliar with their product line, differences between models, et cetera. Can someone refer me to a website that outlines the different bronica models so i can familiarize myself and hopefully make a more educated decision?