I agree that the glow is a pain. It's cheaper to get into initially but it costs more in the long run. Gas really is the way to go but I'm in the position of not having small enough gas motors and I would have to change so much to make it work. The extra weight would throw off my cg unless I spent the money and bought the saito. It's not practical for me, but if I was starting a new build I would definitely go gas.
Out of nitro, four stroke is the way for me but gas would be ideal. I'm still trying to decide which brand of gas motor I would go for on a larger plane. I really want to build a 50cc gas supercub.