RE: Gas or electric
That becomes a matter of what you learned with and the equipment you got to start out with.
I started out glow and am no that enthused with electric. They lack the endurance of a typical glow powered aircraft. Simply stated, the harder you play the throttle on electrics, the less you have. Not so with glow.
I agree with opjose and the others.
Glow is good. Electric is ok.