EPA and Dual Rates are not the same thing....... You can use EPA to adjust the "throw" of the control surace or throttle. Dual Rates lets you set different "throws" in "High Rate" and "Low Rate". You might like to takeoff and land with less elevator travel than you would while flying up high, so you use low rates for that and then use high rates to have more movement while doing loops or aileron rolls, etc. Negative Exponential will give you softer ( less movement) around the center point of the stick but still have the full movement of the control surface at the end of the stick movement. Makes for smoother flying if you are twitchy on the sticks, like me..... You can do a lot with that radio, and talk to some aerobatic flyers on just what the different adjustments do and why they use what they use....Above all HAVE FUN>>>>>>>>>>>&gt ;>>

Bruce...You'er quick on the post, I was typing while you were posting, so I didn't see your post before I sent mine........but I agree with you....