You can get a Minolta XD-11 and 50mm f/1.4 for under $100. Minolta lenses are excellent, and very underpriced. Canon A-1 or AE-1 Program and 50mm f/1.4 would also be good. Canon FD lenses are not so underpriced, but still a good value. Every time I look at the OM system I get sticker shock; same with the older Nikons, but they're both very good.