Mapex Black Panthers are nice, and not too expensive. Ditto the PDP's (made solidly yet on-a-budget by DW). I'd say definitely check out the Pearl free-floater on ebay as well. You can get a pretty nice-sounding drum and not spend tons of money, but you should still plan on spending between $300 and $450 for one. Needless to say you want one that's in good shape (if used), with bearing edges that are sharp.
A company called WorldMax makes a line of snare drums called the Black Dawg, which is a takeoff on the Ludwig Black Beauty. I have one; they are around $300, and they sound wonderful! A great value. But I know you would rather go with a wood snare. I'm just throwing that out there.
Oh, one more thing: I'd also suggest (yeah, I know, another metal snare option) looking for a decent- to good-condition Ludwig LM400 chrome snare (if you're not familiar with it, you'll recognize it when you see a picture of it). It's the ubiquitous "chrome" Ludwig used by Bonham, Gadd and countless others. A true classic snare drum.
-Tom Hipskind