I went with Calcovers, they offer many choices. I went with their "softweave" which allows for some use outside (read car shows, trips) but is mainly good for the garage. It's soft, doesn't hold dirt and washable. Also, their site offers a custom fit which on my car is nice and tight but doesn't require two people to put on w/o scratching the paint. I've got to say after three years, it still looks new and the elastic is still strong. Make sure to select "Cobra" in the first pull down then after selecting the rest of the tabs, fill a little info in the free text box about the car...they'll do the rest.
http://www.calcarcover.com/cover_find.aspx