Best digital camera for b&w stills under $600

[valzi]

Thanks in advance for your suggestions.


My previous camera is a Minolta Maxxum 7000 from 1985. I've always developed the film and photographs myself. If I can get a digital camera that's notably better than that (I no longer have access to a dark room or the money to keep spending on the materials necessary for one.)
I'd prefer to not spend more than $600. If I can spend less than that, even better.


I'll be making black and white images to be printed at gallery quality, so I suspect I'll always shoot in RAW, based on what I've read.


I don't care about video.


I'll primarily be shooting close and macro shots, but will also be doing some portraiture. I often use a tripod. High-speed shots aren't very important to me.


I generally hate flashes. I use natural light and (occasionally) studio light.


I'd appreciate lens recommendations as well, even if you're just recommending that I take a kit lens.


Thanks!