Like frobozz said, it really depends on what size car you are looking for.
I think that if you are looking for a mid-size, 4-door sedan, I would go with a Honda Accord. These cars are really nice, and they actually have a little punch, not much though. If you were to go for a new Civic, these are also nice, and they did extremely well on the crash tests, but they tend to be smaller. This goes for the engine as well. Also the Toyota Camry is a wonderful car.
I would, if I were you, go down and look at some Subarus. These have become really reliable over the last couple of years, and you can’t beat 'um in the versatility catagory. There are some bigger models, like the Outback Legacy, which comes in a 4-door sedan version, and it is a bit like a town-crusier.
If you want a smaller car, there are so many to choose from. Honda Civic, great car, affordable, great safety. If you are in a urban environment, you may wanna take a look at the new Honda Insight or the Toyota Prius as well. These are the gasoline-electric hybrid, and you can get anywhere from 50 to 70mpg outta these puppies. They will run ya about $20k, and I remember you said you loan goes that high, so you may wanna test drive one.
there really aren’t as many American cars in this catagory, or at least not ones I would be that interested in. Chevy Mailbu, supposedly good value, I can’t say that the styling is that great, IMO. Ford Escort, blah.
Oops, I almost forgot. there is that new company out there, Daewoo. I can’t say that I have heard a lot about these cars, but the magazines seem to be giving them pretty good ratings. A new one, their most luxurious model too, will only cost ya $15k, and you can get a smaller car too for right around $10k.
The main thing you need to do iss go find a car you are comfortable in. I would suggest going down to the 2 or 3 biggest dealers in your area, maybe a Honda, Chevy, and a Toyota or Ford dealership. there, you will be able to see a lot of cars, and a lot will be cars that aren’t made by that company, so you can get a taste of them all.