Try Dali Racing, California Covers or HRant on this board.
I swear I'm not trying to brush you off or be rude but a search would likely lead you to a lot of good info. I know because this is the third post about car covers I've responded to in the last few weeks alone.
Finally, if you want good feedback, give us a little more detail.
1) What color is your car
2) Is dent protection important to you
3) How important is storage space
Agree with Da Hapa. I have responded to probably the same posts has the other poster. Just look down the board and you should see a few other threads. (There is a topic 5 posts below yours that is titled "NSX Covers"