to the Forum. Nice to have you aboard. C5 are awesome and a big jump from the C4 in terms of comfort and technology. The C6 is refined even furthur but very similar to the C5.
Once you find a C5 you like, I strongly recommend having a vette garage go over the car with you to make sure everything is in good shape. If there are issues, this could be a bargaining chip for you assuming you still want the car.
I've used AutoXTC exclusively over the past 5 years for my mods and maintenance. They are in Pinellas Park and can be reached at 727-573-1292. Larry French is the owner. John Wilson is the master of all master vette tech. Ask for John and if it helps, tell him Mark aka THOR referred you.
Good luck with your search and welcome again to the site.
PS: I would buy from a private party. I think there's more wiggle room in negotiation.