RE: COX Micro Warbirds
I just got a couple of these and think they are the best thing Cox has done in a while.
The 2 cell Etec 450 packs look to fit the best, with a great form factor (more like a fat stick of gum)
I am going to do both my P-47 and Corsair with ailerons and upgrade the Corsair to brushless, I think.
The Estes side of the house is marketing the same basic models to the R/C toy market, with cheapie single channel rudder control for around 29.95. They have a different 4 cell motor for NiMH batteries and use the same props. Interestingl, they come in some different color schemes, such as a white, light blue and mid blue Corsair and a silver and yellow P-47.