Like some of the other posts here, I have a Roadmaster Sterling All Terrain because that's what the dealer sold. I have it attached to an Acura TL, and you can see the base plate connections, but it's not all that bad. Now when I leave the cross bar on it, it's a different story. Doesn't look good at all, but it's a conversation starter to those who are unfamiliar with them.
I've been completely happy with it, and it doesn't take long to connect. In fact, DW connects the tow bar while I set up the Brake Buddy.
Interesting story about that ugly cross bar. I hit a deer one night while the cross bar was on the front of the toad. I was almost stopped (maybe down to about 15 mph) when I actually hit it, but there was absolutely no damage to the front of the toad nor the cross bar which took most of the hit. Don't know about the deer - he flipped on the road and into a ditch and ran away!
That certainly should not be the only reason for buying one brand over the other. Like several have said before, it's a matter of opinion and availability. My father-in-law has a Blue Ox to pull a Jeep Liberty and he has had no trouble at all.