We just use the ordinary wooden pole type, we bought a 10 pole windbreak off Ebay for £24 and it seems fine and its cheap enough to simply replace when it does eventually break.
I also have the Khyam windbreak. Excellent - easy to put up, with guy lines for when it's breezy and allows you to see some of what's going on. Highly recommended.
Dont the guy lines get in the way. We've always used the cheap wooden ones and theyve bin fine. Got fed up this year dodging guy lines on windbreaks at the more crowded sites