My Dad keeps buying long bodied BMW 7-Series and they keep being total disappointments. So we went car shopping together and I got to the root of his problem. He wants a car that he likes to drive, but also one that can accommodate passengers comfortably.
I have him considering a two-car solution instead: a comfy big SUV and a fun classic car. For what he's spending on 7-serieses (about $90K) he could get a fine example of both.
He's not a mechanic by any stretch of the imagination, so he's going to be looking for cars in decent condition from reputable sources.
Other than your eBays and Lists of Craig, where does one look for a great classic car?