Car Covers - Which one is best?

I've got one of the stormweave covers from California Car Cover on my duster. fit is great, and it keeps most the dust and dirt off of it. The cover soaks up rain and dries up quickly, there will still be a thin film of water on the paint if it's left outside though. Mine's been out in the California heat, wind and rain since February with no problems, save for my neighbor's ciggarette butt burning a hole in the center of the hood (cal car cover sent patch material for free). It's not cheap, mine was about $220, but it's worth the investment, and I'll order another one for my dad's Super Bee once that get's painted