My brother has the hot lava color FR-S. Sick as fuck but it cost around 25-30k. A little out of op's price range.
I would get a 06' Evo. I've seen some local listings for around 16,17k.
Try and find yourself a 1990`s Nissan Skyline.. I know for a fact you can find them in your price range and I think they have to be one of the best cars in your price range.
Before you take suggestions It all depends on what you want to do with it not appearance. Performance and reliability is what makes a car good... Adding a body kit is easy