My car at the moment is a Honda/Acura Integra...which in it's time would have competed with, I suppose, the Chevy Cavalier, Dodge Neon 2-door, and...Ford Probe/Escort ZX2. The Cavalier is atrocious, in looks, handling, ride, engine, everything. The Neon, while the ACR versions are quite interesting, is just as bad. I owned a Probe GT, and loved the car dearly, but...you can see how that comparison won out. Were I choosing between the two new, I would choose the Probe GT, but used, hell no. No dealer carries parts, it's terribly unreliable, there's no aftermarket support (a major factor in car-buying decisions for me) and of course the universal complaint, the interior was falling apart. Literally. Things fell off as you drove down the road.
Buying new right now, on my budget, I would look at-
Mazdaspeed3
VW GTI
Chevy Cobalt SS
Honda Civic Si Sedan
Mazda MX5/Miata
As far as the Miata goes, I love pure sports cars, but I probably wouldn't want the impracticality of the Miata, so it's pretty much out. It's alternative from the big 3 would be the Solstice/Sky pair, and while I like the Sky, I don't like it that much. I think the Solstice is atrociously ugly...so...that's very, very much out.
I love hot hatches, so in the end I'd probably buy a Mazdaspeed3 or VW GTI. I've driven both and liked them a lot...I've also driven the Civic Si, and didn't particularly care for it. The domestic alternative is, of course, the much-hyped new Cobalt SS. Frankly, I'd have to drive it back to back with the Mazdaspeed3 and GTI to decide...how a car feels is most important to me, not lap times or statistics.
I'd probably buy an Integra Type-R or a Honda S2000 before I'd buy any of the above, though.