Brett, I've used several of the Equinox sil tarps and never had a problem. You can pick up an 8 x 10 for $84, and it weighs 13.9oz. My tarps have been hit by some heavy winds coming straight off of lakes (ie Lake Superior, smaller inland) and across fields, and I've never really had a problem with them. One exception: I always rig with a ridge line, which means a line under the full length of the tarp. That line helps provide a lot of support to the tarp, and takes strain off the ridgeline grommets, too. One time I just tied off to the grommets on the ridgeline, used zero-stretch spectra lines, and a trucker hitch on each end to get the tarp super tight. I did pull out a grommet then, but I was doing everything wrong (and the tarp still worked fine, I added a grosgrain loop when I got home, took about 1 minute).
Pitch it right, it'll serve you well. Given that many similar tarps can run nearly double the money, the Equinox tarps are money well spent.