So, I was all set to buy a new setup from KEH.com, and that setup was to be a Mamiya RB67. But, after looking, I am curious about the Broncia SQ. My upper budget for the system (with one lens) is $500. The remaining money I have is to be spent on film, processing, and a scanner. The other requirements are waist level finder, changeable lenses, negative at least 6x6 or larger, and 120 film. That said, the Broncia SQ seems to be lighter and more compact than the RB67, which would help it for field use. Opinions? Just trying to talk this out before I settle on one of the two systems, and some of you out there have great experience with one or both.