Having burned up my Fiat due to a braking system "incident," I'm not a fan of any electronic braking system. Am convinced the Chinese are trying to kill us with defective products; in my case, it's Dave 0, CCP 1.
Unlike that doggone Fiat, which I'm still dragging around -- supplement-free, mind you -- you have a fine machine that should last pretty much forever. I'd invest in the best. The Demco looks a lot more attractive to me than anything electronic, although if you're gonna go that route, look at the AF-1, which my tech says seems to be the most reliable (and has a lot of fans on this forum). (That's where I'm going when I get around to rigging up Her Majesty's Lincoln for towing, because -- well, she would not be amused if I burned that thing up.)
Speaking of techs, no, the dealership ain't gonna fix this problem for ya. It's either camping world, or a specialist. Neither is going to come cheap, but there's an argument for getting it done right the first time (and no offense, but that's also the argument for an independent specialist)
I found mine by asking the manufacturer who does their installs in my area
2008 Tiffin Allegro Bus