I agree with [MENTION=4082]2Cool[/MENTION]. I too have a vette, not a C5Z but I have a 2000 FRC(fixed roof coupe) vette which is the predecessor to the Z06(same coupe body but without the LS6 motor. I have a bunch of things done to the car. but honestly I RARELY drive it. it gets decent gas mileage a big trunk incredibly light, extremely fast. And will probably always remain my race car, no offense to any 5.0GT's but with VERY little motor work done to the vette it makes the GT's look silly in any department. (looks will be opinionated((is that a word!?lol)) My friend has a 5.0 and gets TERRIBLE gas mileage in the city, somewhere around 14-15. My vette around 19. on the highway my vette gets 30 my friends GT gets 25. granted the GT has four seats. after driving both and racing both on the track I would never get a new 5.0 over my Vette. I would say though, the C5 vette (non FRC or Z06) I would never consider either. and just as 2cool also said, the interior is cheap and outdated but I mean hell its 16 years old.
If I had to trade my FiST in it would be for a FoRS, GT350R, Ecoboost Raptor, Z28 Camaro, or C6/C7 Z06/ZR1. so to answer your question, for anything under 30k. I wouldn't bother unless you found a good C5 Z06. you can also pick up some C6 vettes for around that price as well, if you can find one with the LS3 I think its 08 maybe 09 or newer, you will have a bad Little Vette on your hands.