RE: How many of you use HAM Ban radios?
I don't see a problem with the ham bands. I am currently flying on the 53 mhz band and no problems. I have used the RC ham bands starting in 1975. Some of the problems you stated were caused during th AM days when modulation from strong stations, sometimes commercial broadcast, creeped into the receivers. However new equipment usually takes a lot longer to obtain than that for 72 mhz.
Go for the ham ticket. I have had one since the mid 1950's and enjoyed most of all the hobby had to offer. If you continue to upgrade your class, you'll find all the info helps even with the rc equipment.
Good Luck
Arno - Amatuer Extra Class N6IX