RE: bind N fly
It's a simple matter that Spektrum developed that tiny receiver technology first that worked with E-Flite's model designs. Any manufacturer could do it, but it's a business gamble to put the R&D dollars into developing it in the hopes that the market will pay you for it. In the micro case, I'm not so sure another manufacturer could profitably get into that market at this point. It's an added cost to maintain inventory of two different radio technologies in BNF airplanes, and the fact is that Spektrum stuff works. As for the bigger planes, I figure we'll see more PNP products as the latecomers to 2.4 continue to grow and the market starts to demand receiver ready planes.