I am putting together my first EP plane a Mamba from NESailplanes. It should be 20 oz or less and will use 3S2100 ma/h pack. Its not going to be too expensive but any bigger the cost get out of hand. I am willing to try Electrics just so I can fly in smaller areas closer to my house. My instructor flys a lot of electics from micro indoor types,scale,motor gliders, to pattern planes. He recently had a construction article in Model Airplane news on his patter plane called the Projectile. I have seen him make three flights of a pattern sequence that lasted 8 mins each on a single charge. He uses the left stick more than anyone I know and can get more flight time from a pack than anyone. But he has proven to me that the perfomance is there in EP. But for bigger models glow or gas is cheaper and will continue to be my favorite. I like hearing engines run and besides I have always hated sailboats and sailplanes for that reason.