I have a Ranger 6300-150 and a Connex 4300-300 and for my money the Ranger is a better sounding radio. It has been in the truck for 7 years and not one problem. Now that I said that it will probably fail next trip out....
If you want a good radio that is set up properly go to cbassholes web site and look around there. There is a lot of knowledge on that web site and they can set up a radio for you that talks without all of the echo and other annoying crap. Click on the link for radio repair and email sinner he will set you up!