Just thought I'd see what your opinions were on spa cover options when looking for a new one. There seem to be a few, and I don't know whether they're snake oil or worthwhile. First off, I live in a snowy region in Tahoe, where there's bound to be some gnarly weather. The summers are fairly mild though, and we don't get any rain then. Just sun. So I'll get a thick 6" cover most likely but wanted to see about foam density. Is a 2# foam better than 1# or 1.5# by that much? Do I need the thicker vapor barrier?