I really wouldn't bother with Autotrader. Every time I've advertised a decent car on there I've had nothing but spammers and timewasters. All my cars have sold either through owners' forums or PH.
Depending on what you're selling the muppets, tyre kickers and dreamers can be a drain. Believe me you get them on PH as well. I'd still say PH is the place though. Good ad and vet people on the phone - lots of time wasters out there.
