I purchased a JetBoil last fall sale at REI, haven't had time to use it yet but I like the Optimus wind screen.

I am wary of screens though, recalling when I was young and more stupid then current, when I got the bright idea to use an MSR foldable aluminum wind screen on my Svea, fully wrapped around.

I put the fire out by immersing the Svea in the stream in front of the lean to. I re-built the Svea but it was never the same.