I feel like comparing it to used cars isn't fair. I'd honestly get an M2 Competiton instead. Obviously inferior in the bench racing Olympics but it has 3 pedals.
If we're talking used I like the C7 GS. I'd get a manual 3LT convertible which would probably eat the whole $60K, and possibly hold its value
If we're talking troll answers I'd do a V6 Miata and a C216 CL600 lol