Already had a Kowa/Six, but saw a Polaroid back for the Kowa 66 on eBay and had to have it. Then I had to get a camera to use the back with....so grabbed a Kowa Super 66! Been looking for one nice/cool MF camera...don't really care for my Rolleiflex because it has issues with sensing the film roll so I've lost quite a few shots. The Kowa 66 is pretty nifty! Much the same as the Six but with exchangeable backs and a multi-exposure switch. Doesn't quite have the same vintage style as the Six but still decent enough. Has a super set of lenses available, as well! I have a couple 85mm lenses, which is the stock setup, and a 150mm. 55mm's are fairly common and watching a couple on eBay right now. Really want the 35mm! Saw one but it was super beat up...will keep looking!
Will blog about all this when I mess around with the 66 some more...some examples from my Kowa/Six w/85mm below.
[Sorry, image deleted during forum software upgrade. Please re-upload if so inclined.]