Online Community of Zenith Builders and Flyers
Check out Todd's canopies. http://www.toddscanopies.com/
Got mine from him and it's really nice. Tinted, just slightly thicker material than the Zenith one, and it comes plenty oversized so you can get more headroom if you want it (or remove more material to make it lower. Best of all, they run about $350 or so if I recall correctly. Mine came in at just about $500 delivered by truck and I had it about three days after ordering. Can't say enough about the company.
I second the recommendation for Todd's. I got mine there and he was a pleasure to deal with. Todd spent about 45 minutes on the phone with me before the install, really helped me to get a grasp on the job. I just finished mine and it came out great, no cracks or any other issues. The shipping is half the price of canopy, but Todd puts it in a custom made wood framed box. I've noticed a lot of guys online talk about how their canopy was 'rolled up' in the kit they got from ZAC. There is no way you could roll this thing up, it's all hard polycarbonate about 1/8-3/16 thick. You will be happy if you go with Todd's. He also has both 601 and 650 canopies.