I posted this up on another forum. Might have more info that you were looking for because it's just a copy/paste:
Well, I'm a big advocate of amateur radio (Ham radio). The range will exceed that of CB, and much more so if you include repeaters. Then to go even further, you could get into HF. Its not unheard of to get 60+ miles of direct comms between Hams using UHF/VHF, and if you add in a good Repeater, then you're looking at 300+miles between hams (and help if there's an emergency). On my way back from Death Vally I was able to hit a Repeater up in Big Bear, CA that was about 180 miles away.
I was on a trail run in anza-borrego last year. There were CBs in a few of the rigs, the leading rig couldn't get a hold of the rig at the tail end. Yet with the 2m radios, were were able to easily reach everyone in the group as well as others in another group several dozen miles away and, if I recall, people at the camp site. So those towards the end of the group with both 2m and CB were asked to relay the info the the person at the end that had only CB.
Now, the only issue with Amateur radio is that not everyones adopted them. So if you mainly go out with a group only on CB, then you'd be better served with a CB radio at least for trail comms. But for emergency comms, you'll probably have a much better chance reaching someone on 2m (especially if you're in range of a Repeater). Now probably the best for of emergency comms is getting into the HF amateur frequencies. With a decent HF mobil rig, you can easily get several hundred if not thousand miles of direct comms. That you would need at least a general class license to operate on.
For the test, it is really not all that difficult for the Tech license. It takes a good few days of studying and running through the practice tests. As long as you spend a little time studying for it, you'll be fine. I think most that are licensed would agree. Right now I'm studying for my general, and this is a bit more technical and looks like it's going to be more of a challenge.
EDIT: for clarification (or possibly more confusion ).
Tech has access to all UHF/VHF and a small slice of 10m HF
General has access to the same as the Tech as well as all of the HF bands, but not all of the available amateur frequencies within those bands.
Extra has access to all available frequencies within all bands.
UHF = 70cm (420MHz), 33cm (902MHz) and 23cm (1240MHz)
VHF = 6m (50MHz), 2m (144MHz) and 1.25m (222MHz)
HF = 160m (8MHz), 80m (3.5MHz), 60m (5.3MHz), 40m (7MHz), 30m (10.1Mhz), 20m (14MHz), 17m (18MHz), 15m (21Mhz), 12m (24MHz) and 10m (28MHz).
Most common used bands that I've personally seen on the trails is 2m, then some on 70cm (you'll find that most available UHF/VHF radios run on these two bands).
Hope some of that makes sense and help with your decision.