I've been using an A75 for about six months now. I think it is the best camera on the market in it's price range. Being a film photographer for many years, I really appreciate the manual control and flexibility this camera has. (This is the last camera for me until I can spring the bucks for an EOS digital body to hang all my film camera's lenses & accessories on.) Picture quality is very good, even when cropping and enlarging. I do have one caveat, however. My mom uses it and doesn't really understand (or desire to, in spite of my attempts to teach her) the basic principles of photography. When she uses it in "Auto" mode as a point & shoot, I would term her results rather "uneven". She actually got better results with a 2MP Fuji FinePix2600 she bought several years ago until it got dropped on a concrete floor. So... if you are a film photographer who understands (or is willing to learn)the photo basics like depth of field, ISO levels, flash range (the one thing I wish this camera has that it doesn't is ability to use a more powerfull external flash), white balance, etc. then I highly recommend it as a transition camera into the digital realm. If you are a point & shooter, however, this may not be the camera for you as I have seen a few others that seem to handle challenging light conditions a little better when set in "Auto" mode.
Also, the A75 is 3.2MP, the A85 is 4.0MP. That's only a 0.8MP (25%) difference. The A75 is now available all over the place for just under $200, while the best I've seen the A85 in a brick & mortar store is a little over $300. That's a 33%+ price jump. And the fixed screen on the A75 is actually larger than the swivel one on the A85.