Smallfly and AJT are right on, once I went gas I never looked back, in fact just the thought of the greasy mess glow engines make, makes me quiver. Also for about $4.00 worth of gas you can fly almost the whole summer. With the new breed of engines out there like the RCS 140 and 180, ZDZ's, and DA's there is VERY little power or weight advantage to the glow. Magneto engines like the Fugi, Zenoa and US would not be my first choice, I suggest an ignition engine, other than MVVS {bad experience}.