Whats the big mystery with the relaunch on the 09 vegas. All i do with mine is pull one of the rear lines and up it goes, that's it. Never had any problems with it. I'd have to disagree with saying the 09 vegas is a quick kite, my 9 turns about the same speed as my 12 meter torch. It has a huge thick leading edge which slows it down a bit and it's defo not quick for a c-ish type kite. I think the 2010 vegas has a slimmer leading edge. That said the 09 is a great kite and gives lovely long floaty jumps + rips upwind. It does ride more like a bow or sle than a c however .
I dont think going from the 08 vegas to an evo would be a great idea as you may have some issues with turning speed if it's as slow as lucie has said.