I am in the same boat as brett65. I like both, but stick to smaller electrics and glow for the bigger stuff. The large electrics are still too expensive IMO. Though, it does seem kinda funny when I watch my electrics fly by silently - doesn't seem very realistic.

I put gearboxes in a lot of my electrics so they make at least SOME noise.
BTW, as far as speed, there are phase3 F-16's going 140+MPH around here, so they can be fast. Also, there are some electric hotliners that are going closer to 200MPH.