I will throw one thing out there though...what CB you mount to your rig doesn't really have all that much effect of CB performance. A good coax, a good antenna (TREVOR!), and a good mount will do more for your ability to use the CB effectively than changing what CB you install. All legal CB's are running at 4 watts, so there won't be much difference in what performance you get from them. As long as you can talk to the rest of the folks on the same trailer run, who really cares?
If you want to talk to someone that's on a different trail run...get yourself a HAM license. Then you'll be able to talk to folks!