I started with a DX3S a few months ago and then "upgraded" to a DX3R. I have used the DX3R for about two months now and I am getting ready to sell it. It just doesn't fit my hand correctly. I find the trigger to be uncomfortable and from time to time my finger comes out of the trigger when I am hitting the brakes. There is nothing wrong with either the R or the S, they just don't work for me.
I tried a buddy of mine's M11 and ever since I have been unhappy with my DX3R. I was actually very close to purchasing an M11 but I have decided to spend the extra money and get the KO Propo EX-10 Eurus. I don't know what it is about that radio but I start drooling every time I look at it.