I fly both, e-flight and glow. All my smaller aircraft, are electric powered. All my .46 size and up are glow powered.
Its all about cost for me. I believe in the "whoever dies with the most planes wins". I fly everything from a slow flyer that you fly around your house to gut busting glow power. Lets look at powering a H9 Twist. I have a .46 in mine. It will hover and do all kinds of aerobatics.
A new OS .46 AX engine is $105 at the LHS. Now, lets power it with electric. Your gonna need at bare minimum an 05 sized motor.
And, you will need a 45 amp ESC. Together, these are gonna run ya at least $175. Probably more towards $250. Lets add the battery pack. You can go with nimh packs, at around 60 bux....but if you go lipo, you can save yourself mucho weight!!!! But, these packs are gonna kill ya in # of cells....Figure $100 or more per pack, and thats just one pack. Your gonna need at least 2 packs. Then, lets not forget the lipo charger for these....Another $120 for a Great Planes Triton or whatever. So, add up your costs....So you wanna spend hundreds just so you don't have to clean the plane???? I aint buying the "e flight is easier to run and setup" theory. If you setup your engine right, you never have to fool with needle settings. There aint a brushless setup in the world for 105 dollars thats gonna match an OS .46. I'll run brushless in my flying wings and smaller planes because its cost effective but not when you get into the bigger stuff.

Dave...