tops answer the one above - an old Rollei is a new master to learn and will (if it has a coated Tessar or even better a Planar lens) give superb results, even when scanned, these 2 1/4" negatives will yield ultimate quality with care. The view finder makes you a disciplined thinker, too.
I had a Yashicamat (Japanese Rollie copy) and my composition has never been better than with that old war horse.
Forget Holga if you need hi-fi 'real' pix, full tone values and critical sharpness comes from Zei$$ or £eica - the Hass is too big to drag around it is really a studio cam unless you are huge, fit, and very well monied.
As an aside the Contax G2 can be had second hand - interchangeable lens 35mm real camera with Zei$$ glass, superb, compact, rangefinder speed, worth a look (not the G1, lousy view finder)
Alternatively, the Zeiss Ikon and Ikonta folders are superb but the view finders need good eyesight; view Flickr there is a whole cult following with staggering quality for these.
All can be had for less than a few hundred dollars but budget for an expert 'CLA' refurbishment, these guys are really old (so am I !!!)