I doubt you'd start a radio war. Yeah, there are a lot of opionions, but it's not a huge deal one way or the other.

Actually, the one recommendation I'd make is check with your local instructors and make sure they have a buddy box that will work with your radio set. I happen to fly mostly JR, and I appear to be the only instructor at my club with a JR trainer cord, everyone else has Futaba.

I also have a Polk radio that doesn't have a trainer function, and a Tower/futaba system.

Hitech can work with Futaba, but I've heard that there are some issues with weither it's a Futaba or Hitech cord connecting the two transmitters when you mix them. Haven't done it myself though.