Summit Car Covers?

What are you guys using for car covers? I am looking into the Summit car covers, do you think they would be okay? My car is going to be outside but it sounds like they are pretty weather-proof. Here's the link, they're reasonably priced too, what size would I need?

http://store.summitracing.com/egnsearch.asp?N=700+115+304995&D=304995

I bought the Wolfe car cover from Summit. It is tailored to fit the 93-2002 f-bodies only so there is no extra slop in it. From what I've heard, the universal car covers can be risky with your car's paint.