CB, antenna solution or maybe Walkie Talkies

On several group runs in the FMC, the communications while traveling was marginal or nonexistent. My CB is old and the antenna is practically worthless. The connector on top of the coach is unusable, currently using a through the glass antenna on the passenger side.  I have seen antennas mounted on the mirror arms and beside the driver; don’t care for either of those.  When stopped on the interstate for a wreck or whatever, I can pick up the truckers very close by. 

Really need to upgrade, just wondering if anyone has researched this and has a reasonably priced solution. My preference would be to fix the connector on top of the coach, but don't think that is possible. Ground plane is an issue.