If you could only have one pair of portable (walkie talkie) radios, would it be GMRS? MURS? I am in southern United States…also considering CB, have it mounted on vehicles before, but looking for options that don’t require external mounts. Anyhow, options, opinions, pros and cons welcome. (For what it is worth, I have experience and licenses…just dealing with a new vehicle - small SUV, great gas mileage, daily driver, looking at different options than before.)