I bought this one in jan. 09 when i got my Z. It has held up just fine, i only thing i would say is do not put a dirty cover on any car clean or dirty. The reason i say that is a dirty cover or a cover with dirt on it can scratch the paint. Not the large noticeable kind but the kind called "swirl marks" you can't see them unless you get very close or do the light test. That's just when you take a close pic of the car and the light shows the small swirls. Here's a link...
The Z Store! Nissan-Datsun 240Z-260Z-280Z-280ZX-300ZX(Z31/Z32)-350Z-370Z Parts: Technalon Car Cover, 09-10 370Z, Factory Rear Spoiler