Re the Bronica S2 system: I agree with the previous advice that the price is too high, and at this point in its history the S2 is most definitely NOT what it used to be ( a great entry-level 6x6 SLR)- it now firmly sits in the category of collector's shelf queen. A revolutionary and interesting system in its heyday, a bargain for MF film shooters til about ten years ago, but its earned its retirement on the display shelf: leave it there in peace. I'd always wanted to own one, because it was the very first MF camera I ever saw or handled. When I was a kid, my best friends sister dated a real estate photographer who used one: like many other pros in the '70s, he chose it primarily for the immensely less expensive wide angle 40mm and 50mm lenses compared to other systems. Ten years ago eBay was flooded with decent S2 gear for sparrow-feed prices, and I finally picked up a complete S2A system. I had a lot of fun with it, especially scaring people with that earth-shattering shutter noise (there is no louder camera on the planet: none). But for actual day-to-day use in the "post-modern-film" era, it pales in comparison to the later Bronica ETR or SQA or the Hasselblad they copied or a Mamiya RB67. Even my Mamiya TLR system gets way more use. The S2 and S2A are too loud, too heavy, too clumsy, and the goofball Nikkor lenses too hard to handle unless you just keep the standard lens glued to the body. The Nikkors are mostly great performers, but the innovative cost-saving "heads-only, no mount or helicoid because that stays with the body" design is an ergonomic nightmare when changing lenses. Worth the trouble back when the cost of each Hassy lens could buy you a premium year-old used car, but not in today's much more diverse and affordable market. Bronica S2 users also inevitably run up against the Achilles Heel of its otherwise very clever design: the woefully misconceived focusing screen hardware. It relies on a system of foam strips and tiny springs to orient it accurately, these always drift within a couple years (which earned the system an undeserved rep for crappy lenses, something Nikon was none too happy about). So the focusing accuracy is pretty much terrible with 90% of the S2 bodies you'll find today: restoring it is not as easy as some of the youTube tutorials makes it look, and alternative screens that fit properly have long ago vanished from availability. Coupled with the excruciatingly complex mirror/viewscreen blind mechanics that almost no camera tech under the age of 80 can repair, the system just isn't practical anymore as anything but a curio or collectible. As far as wanting to shoot medium format "discreetly", in some ways that isn't really possible today. For one thing, virtually every medium format camera looks like a wildly-dated antique now: this alone attracts unwanted attention and curiosity. Some photographers turn this to advantage, engaging people in conversation and making a collaborative photo. But unnoticed grab shots of people behaving un-posed can be a challenge. For another, many MF cameras are as big and noisy as a motorized modern DSLR. This can be less obvious on a busy noisy urban street, but if someone is alert they will easily catch you out. The most discreet MF cameras are the fixed-lens compact TLRs like Rollei and Yashica, followed by the folders. The folders are more obvious, because you hold them up to your face, but they're silent and fast (with practice you can grab a shot with no one catching you). The small TLRs are also silent, and many people don't register them as cameras when you aim with their waist-level finders. BUT: they look positively baroque to anyone under 50, and attract attention on that score (especially the blinged-out Rolleiflex, which everyone under 30 is indoctrinated to worship in Hipster 101). The Yashicamat TLRs are mostly black and much less "look at ME", but prices have shot up to a ludicrous average of $400 (the 124G was a near-dispoable camera that Yashica couldn't give away for $99 new up thru the 1980s, and it still sold used for peanuts until 2008, when desperate hipsters hit on them as a Rollei alternative (if you want a TLR bad enough, $350 for a mint Yashica is still way less than the $1500 asked for similar Rolleis). The most reliable, no-fuss, reasonably-priced TLR you can buy right now is a Mamiya C220. Patient hunting can land you one with an 80mm 2.8 or 100mm 3.5 for under $200. But they're larger, clumsier and a bit noisier than a Rolleiflex or Yashica (the trade-off for their interchangeable lenses and built-in close focusing bellows). Alternatives like Minolta Diacord had great lenses, but are rapidly escalating in price and have fatal design flaws like focus levers that snap off and can't be replaced. Even the farcical bargain-basement Chinese Seagull TLR, made of cardboard and and held together with a gluestick, has shot way up in price due to every hipster requiring a TLR around his/her neck as jewelry. If you can handle the slightly larger size and weight, Mamiya C220 is the way to go (in a pinch, its also great for beating muggers unconscious).