I agree that electrics will NOT dominate this hobby anytime soon! For the simple fact that other than the many Toy class junk planes out there, Electrics are far more expensive! Just to set up a little 3d foamie type plane to perform properly is in the neighborhood of $300, & more if you really want unlimited vertical perfomance from it. The largest electric I've seen in competition was about a .60 size plane @ an IMAC event this year. It was dwarfed by the rest of the 28% or larger planes in the competition & I had oppertunity to talk with the man that owned it. He had $600 worth of lipo batteries in the plane, & $ 600 more sitting on the charger for the next round. God only knows how much the brushless motor powerful enough to fly that kind of weight effectively in competition cost. Not to mention the speed controller with a high enough rating to handle all the amps being ran thru it. That's $1200 just in batteries alone, where a .91 to 1.20 size 4-stroke would have flown the wings off of the that plane! For $250 to $400 tops depending on engine choice.
There are also many 2-stroke engine choices that would do it as well for even less money. The other thing you will never get from electrics regardless of how much $$$ you are willing to spend is the type of throttle response & feel that you only get from a real combustion type engine(IMO) Don't misunderstand me, I'm not trying to bash electrics here, I have a few & they can be great fun, I just want you to realize to get to the great fun bracket with electrics, plan on spending some real $$$

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Mark