When I researched this same subject several years ago I saw a lot of bad reviews on the chatterbox, but don't have any personal experince with it.
Ended up buying
http://www.jmcorp.com/SeeProducts.asp?PF=29
It allows you to
Dump an mp3 signal into yopur headset, amplifying it as well. (main reason I bought it, can't hear normal ear buds even with a full face helmet)
Tie in your radar detector audio, as well as GPS Audio
Answer or make calls via cell phone
Tie yours and a passengers head set together so your wife can bug the **** out of you even on a nice ride when nornally you you wouldn't be able to hear her tell you she has to piss or to slow down or quit pulling wheelies:rofl_200:
And in your case, tie in a CB or FRS/GMRS Two-Way Radio, FRS/GMRS is more commonly known as a walkie talkie, good for about up to a couple miles, but best at 1/2 to 1 mile using a good walkie talkie. I use the same two ways on the deer lease and can get reception for 4-5 miles when on the more powerful GMRS; but that's out of 20 foot tall deer blind.
The Integratr does NOT have any two way capabilty by itself and requires the use of a separate phone or walkie talkie for that function.
It's big enough that it really needs a tank bag to carry it in along with the phone and or walkie talkie. About the size of 3 packs of Cigs.
The unit has been very dependable and I have had no problems with it...
I modified the battery case so I could plug it directly into the bike
Quality helmet speakers and boom mike are easy to install if you have an Exacto knife and aren't scared of cutting into a good helmet..... And J&M's voice activated mike comes in loud and clear with little or no road noise when used inside a full face helmet....and can be pushed out of the way when not in use, I don't even notice mine is there....