What car covers are you all using and will it also fit an SRT Roadster?

 

I have this one: http://www.wyckoffchryslerparts.com/chcrveco.html.
The fit is superb. It is not cloth though, more like a windbreaker type material (as long as your car is clean, you won't have to worry about scratches - IMO).

 

You might want to try AutoBarn.com. I just bought one for $189 delivered for my '05 SRT6 Roadster. Specify SRT6 on the pull down choices. I have a '05 Limited Roadster also and its cover (Wolf) was not a good fit on the SRT6.
AutoBarn has several grades from which to choose.