I have had great success with a bluespot in a 180. The key is bottom swimming area, though. You'd want a long, wide bottomed tank. Fine sand ("sugar sand") is the only substrate I use. No live rock for the ray to scrape herself on. No fish to bother the ray.
Also, water quality is more important to rays than some other hardier fish. They're fairly sensitive, so RO or DI water is essential, in my opinion. And you can't skimp on water changes.
This is strictly my opinion, but I think one of the reasons my bluespot does so well BESIDES water quality and tank size is that I have the tank way OUT OF THE WAY of everything. No foot traffic near the tank, no dog near the tank, no noise near the tank, no lights near the tank. I try to make sure nothing bothers her.
I will also say that I expect to move her to a larger tank when she gets bigger.
As for other rays, I agree that yellows would probably be the only other ray besides the bluespot that could remain in a (large) home aquarium. I hear yellows are much hardier than bluespots, too.
Aquarium Sharks and Rays by Scott Michael is an excellent book on ray keeping. In fact, I can't find much else out there about them. Buy it first if you're really serious about keeping stingrays.