I have used Blue Ox towbars for more than 10 years with good results. I chose the Blue Ox because of the clean installation, when towing and when disconnected. The Blue Ox baseplate provides complete structural integrity behind the bumper, so only the tow tabs show from the front when towing and can be easily removed when disconnected. Virtually no tow hardware showing at all. take a look at the installations on towingworld.com.
The Roadmaster baseplate is simpler and a little lighter but doesn't provide resistance to spreading forces and requires an additional spreader bar on the front of the TOAD to provide that strength. Makes a more complex configuration on the front. it can also be removed but much more complicated.
Roadmaster seems to be more widely available in some parts of the country (We're in Pacific Northwest). I think this is because installers like the simpler installation and don't worry much about what it looks like in use.
