The DX8 is a great radio and if that is what you want have your hobby shop order you one that has both sticks spring loaded they can order it that way don't let them say they can't. If they wont do it, order one from Horizon Hobby they own spectrum and tell them that is how you want it. My DX6I, DX7, and DX8 were all ordered with both sticks spring loaded at no extra charge I also got a DX8 for ihbuilder set up that way as well. One cool feature is that you can control servo speed with the radio whether it is a proportional or 3 position ch. you can program up to 30 sec for full travel. I use that feature on my tag axle just flip the switch and it goes up or down in a nice slow smooth motion. here is a video of my dump bed and tag axle.
http://www.youtube.com/watch?v=jx2NsCbQEhk
Travis