A little while ago I acquired a Walkera Devo 7e from a friend, for use with my assorted R/C aircraft. This is a pretty dandy little radio in its own right, which speaks the Walkera Devo radio protocol. By doing nothing but reflashing it with Deviation firmware, you can add support for the Spektrum DSM2 and DSMX protocols. But if you're willing to pick up a soldering iron, you can accomplish a whole lot more for not too much money.
A photo of my Walkera Devo 7e R/C TX after the 2x3 switch mod but before the 3 in 1 radio mod