Any kind that is applied by someone else!
I don't wash my Jeep until it's so dirty that you can't get near it (and it doesn't like to be clean anyway... runs badly) so I definately don't wax it. My Class C needs a paint job so it doesn't get any wax on it. After it does get painted (and the paint cures for a couple of months) I will put one of those wipe on silicone glaze type polishes on. I've tried many others (including the paste-type) and prefer the easy wipe on type. It seems to last longer for me. Atleast I am more inclined to wax it again when it does need another wax job. But hey, I'm lazy...