For the cost I would get a self launcher vice a sustainer. I know the Lak 17 FES can launch but I think they were originally and maybe still calling it a sustainer. For that kind of money I would want the glider manufacture to endorse launch. I think the Mini Lak and the Silent endorse launch. I would hate to have over 100k in a glider and self launch and something go wrong and insurance not pay off because I was launching a sustainer. Please correct me if I'm wrong.

I do like the ease of use of the FES and think its great