I got one of Brian's SpinnTex tarps. I like that it stays tight through the night. It's a bit noisier like everyone says, but you get use to it. I think SpinnTex will replace silnylon as the standard for tarps pretty quickly. It's more expensive, but not that bad. For a 8 X 10 cat cut tarp it's $95 vs $155. Sounds like a lot, but it's about 25% lighter - 16.5 oz vs 12.5 oz and, from what I read above, stronger.