i have flown 2007 xbow. Currently 2008 xbow aswell as sb2.
Got to ride the helix last week. Sigma and geotech work like naish claims. Honoustly thats about all i can tell. For sure you need to try a product several times to be able to give a good revieuw.
THe helix was setup 1:1, as most naishriders do. I think thats a shame, and not fully using the whole benefits of the kite. Apparantly the naishkites suck in 2:1.
I was much more impressed with the Switchblade 10 that i tried again from a friend of mine. I have a SB2 12 myself. The 10 is such an efficient kite, big lift, big range. Lowend is about the same as the 12m, riding in highend means very big air. Upwind is perfect.
Im flying xbow 7m 2008. Is more efficient kite than last years. Im very stoked about this kite. I like te way its feels. Its better for unhooked, and kiteloops.
Going to get a SB3 10m and yet again fly a size smaller than previous season.