I know cobra detectors are crap, but I'm considering a Cobra CB for interstate trips. 146.520 and 446.000 are normally pretty quiet and while I don't mind quiet, those frequencies also don't typically offer any traffic information.
I am looking at the Cobra 18WXSTII. The reason I like this is the fact that it has a front-firing speaker. I will be purchasing a Tahoe and probably going with a Havis radio-console which is what is in public-safety vehicles. The front-firing speaker will eliminate the need for yet another external speaker in addition to the 2 I will already have to install for the other 2 radios I have that will also be mounted.