Since you alrerady have the DSM radio you should keep with it in the new equipment you buy. My personal choice is to stick with my JR 8103 and FM/synth gear. With all the other guys at the field switching to DSM it frees up the airwaves and good cheap recievers are easy to find as the new DSM guys are selling off thier old stuff. I have never fallen victim to FM interference and feel no reason to upgrade, infact, I have every reson not too.