I just got a EX5-UR a couple of weeks ago and am loving it. Like you, my previous radio was a XS3. I find the EX5 to have all the features I needed from the XS3 in addition to a rock solid 2.4G connection. I've been to the track numerous times and have never lost a bind. I'm using it in a 1/10th buggy if it makes a difference. The digital servo requirement was not a problem since I was already using them with the XS3.