If you really want to make these radios shine, install it with one of the big Motorola external speakers. It really improves the sounds and intelligibility by quite a bit.
My personal truck has a CDM1550 with the Moto speaker mounted under the dash. Plenty loud enough to hear the radio at half volume with all the windows down at highway speeds. Makes it a lot easier to hear radio traffic.
My wife's Ford Escape has a CDM1250 without the external speaker, and it still works well. I do prefer the audio from the external speaker, though.
Also running a CDM750 in a Polaris UTV. Running down a fire road at 40mph with a full face helmet on I can hear/understand all radio traffic without any issues. At full volume with the vehicle stopped, it'll hurt your ears.
That and a properly installed permanent mount antenna. Can't go wrong with a good setup like that.