Blue Ox is a cleaner looking setup than (at least most) Roadmaster setups. RM may have recently caught up, but with BO you'd disconnect the coach-mounted towbar, un-twist a couple adapters and have a clean toad. Most RM owners left the adapters and crossbar in place because it's a pain to remove three pieces. You'll recognize them because their car looks like it has a snowplow frame on it. That said, I'm convinced RM makes the structurally stronger setups.
The Ready Brute lineup from Night Shift Auto is another outstanding product and offers integrated braking.
You can use one brand's bar with another brand's baseplate. My advice is to look at the baseplate kits on-line. Parts list and install instructions. You'll get an idea how it ties to your specific toad and what it'll look like when done. Also there's a Degree of Difficulty giving you an idea if you want to DIY or how time consuming/invasive it'll be for pro install.