Handhelds won't perform as well as a well tuned mounted radio. I have a hand held and a regular CB. I live on about 24 acres and we use the hand held for "base" station, and a regular CB in my jeep and my boys go kart. We use the radios to get in touch if one is out and about and the handheld doesn't nearly the range as the others.
With out them being mounted they slip around and never seem to be within reach wen you need them.
01 TJ, 34 Super Swaper 34x10.5 bias, Winch, locked, belly up, some armor, 4.0, 5spd