It's a tough thing to have to deal with Yellerchamp. Pay the price that's dictated for nitro, or the price dictated for good batteries. My opinion (and I have $2300 worth of useless Flight Powers sitting here) is that electric is as cheap as glow in the long run. Maybe not on the first plane, but in setting up a second plane it is as you already have the batteries. I'm trying the TrueRc packs, and like them for now. Time will tell, but I'll probably try the new Thunder Power 5200's, or go back to the 5300's.
If fuel was $15 a gallon for the new Dz's, I would consider setting up a glow plane also. The Dz's are great motors and produce well. The price of Nitro and the Dz keeps me from going back to glow. Not the difference between glow and electric. Just the price to switch back.

Make sure it's really what you want before you switch. Glow will come back down, but it's like gas (or most Lipo's), it will never be cheap again.

Chris