I held a dx6i before i made my decision, and I didn't like it. It is bigger than the normal radios, thinner but wider. That's just my preference, and I even have large hands. I went with the 6ex, and I love the way the programming is set up on it along with the location of the switches and buttons. The only negative about it is the throttle clicks are not as smooth as a "JR" or Spektrum(same thing). The futaba uses a single receiver with dual wires while the spektrum uses two receivers linked together. I didn't want to mess with trying to mount two, so I went futaba. Try to hold one if you can at a local hobby shop, and check out the differences. Both technologies are great. I have Spektrum on all my nitro vehicles.