Its nothing like digital man, the quality doesn't really depend on the camera, only the glass in the lens and the film. Hassleblad's have the highest quality lenses, but you're going to paying a lot for that, and you're not really going to see much difference between that and a bronny. The quality of a 6x6 photo is crazy compared most digi photos so I wouldn't even worry about that.
Developing b&w film isn't really that hard either, its not that expensive either. Getting color done can be more, especially if you're shooting a lot, you're only get 12 photos per film remember, unless your using 220 film which gives you 24 exposures.
I'd recommend getting the bronica sq-a personally, with a waist level finder, and a couple of 120 backs. For me the rb67 is too big, if you can find a size comparison you might be surprised.
You'll probably want a handheld lightmeter too, you won't have any meter in the camera unless you get a AE prism, not really worth the money though. I use the sekonic L308, its an ambient and flash meter and its not too expensive, spot meters are the best but they cost a lot more. You might want a film scanner too, I'm not really up to date with scanners but I have a Canoscan 8400f which can take 35mm and 120 film and scans up to 3200dpi, and I think its pretty good.
