HI Gordon,
I too pondered on this. I bought a BobCat while I was building my F4. I really like to fly alot and the fuel and fly concept works for me well. This past weekend at a jet meet I made over twenty flights. Until something changes in batteries, either faster charging and lower prices. It is hard for me to justify these big packs that can be ruined in a blink! I am limiting my edf stuff to my Jepe F-16 which fly like a turbine as your know. But I am definately not adding any large edf models to the stable for right now.