Im not saying that electric will be dominant. I have now both electric and nitro engines. THe electric RTF Setup for my tiger moth costs around 650 (without radio gear). My easy sport with engine setup costs around 250 without radio. THe nitro setup is faster, heavier, more powerfull, and cheaper, but not reliable. THere were about a dozen of situations where i took off and the motor quit (I had a fualty motor andi sent it to repair where it got lost, GRRRRAARRH@!!!. Anyway, im not saying that any one of them is bettter then the other. If your filthy rich and dont want to get messy with your plane, go for electric, if you would like to hear a real engine roar and experience the beauty of the sound, and have fun tinkering, go for gas. None is better then the other. If they invent an electric motor that has .46 power, sound of a four stroke, costs 100 bucks (With speed control), that would be grand, but until then, neither is really BETTER then the other. I guess it was my mistake for putting that electrics will be dominant. I agree that gas wont ever go off the shelf in my lifetime (16 y old). I enjoy filling up gas tanks more then charging lipos.

PS: I was reading an issue about an ELEctric GIant in Fly RC. Check out pg. 58 of this issue: http://www.flyrc.com/toc_09-05.shtml
What % is this? I think its pretty big, but DARN EXPESNIVE TOO.