Look for used Delta, Jet or Powermatic "contractor saws". I bought a new Jet contractor saw which I absolutely love, but new its just above your $400 price ($549 or something like that). If you can find them used, they will be about 20% less than that (they hold their value well.)
I had a 70's era Craftsman, and they are junk. The trunnions on the bottom, that hold the cast iron table to the saw itself, are aluminum, and the bolts creep constantly. If I took the time to set up the saw with the blade parallel to the miter slot each time I used it, it worked fine. I built my entertainment center that way. I even upgraded it with a kit to align it easier ... some hardened steel studs and brackets that allowed you to use an allen screw to move the table slightly. It made it easier, but it was still a pain. Just not worth it.
CAUTION: PERSONAL OPINION AHEAD!
Delta, Jet and Powermatic make good saws. Grizzly has some slightly less expensive, and I've heard good things about them, but I haven't had personal experience with them. If you run into an old Rockwell, check it out and buy it if its in good shape (they are the forerunner to Delta, and very well made ... but they are about 40 years old now).
Stay away from anything by Ryobi, Craftsman (now made by Ryobi, I think), Ridgid (made by Emerson, who used to make Craftsman) and any of the cheaper "table top" saws by anyone. They aren't worth it.
The contractor grade saws are pretty good from the three I mentioned. I bought the cheapest contractor saw from Jet, as it has the pressed steel side tables. It works great for my purposes, but I could have spent another $200 or so to get cast iron side tables. I just don't think its worth it at that level (its not quite like putting a fur coat on a pig ... which doesn't make the pig any prettier or happier ... but close, in my opinion). It is well balanced, the blade was within .005 of being true, the table top flat, and you can balance a nickel on end and turn it on and the nickel will stay there while the saw runs. It can cut 8/4 hardwood stock without a problem, but you may get some bogging down ripping long boards, especially if you aren't using a rip blade. The sawing capabilities I have with the Jet JWTS-10 (I think that's the model number) are duplicated in the Delta and Powermatic of the same size. (All three have cheaper "home" or "hobby" saws with 1 hp motors which are not worth the trouble ... they run in the high $300 range, but are no better than the saw you gave away, IMHO.)
BTW - my brother also has my old Craftsman.