We looked at the Canyon Star 3710 ourselves, and it was one of the finalists if we would have purchased a gas Class A.
I have the RViBrake3 and like it very much. Previously I used a Ready Brute Elite on my Ford C-MAX, but did not want to be drilling holes and routing cables on my new F-150. The RViBrake3 tablet allows you to change settings on-the-fly, which was very useful when figuring out what setting to use on the F-150. Note that you do not have to use the tablet at all...once the RViBrake3 is set the way you want it (which you can do from the RViBrake3 itself by the way) the tablet is really only used to test the brakes from the motorhome, to change settings from the motorhome, and to monitor from the motorhome (things many other systems do not easily allow).
Typically I'll do a brake test at 10 mph before each departure from the house, from storage or when leaving a gas station. I do sometimes play with it in different terrain situations, but I've pretty much settled on the settings I like.
Overall, I'd buy the RViBrake3 again...small (fits under my 2nd row of seats), easy to put in/out (takes only seconds) and seems to work when needed, and does not activate when not necessary.
Personally, I'm not [yet] impressed with the RVi tire pressure system...seems to be having some issues getting off the runway. I have the TST system and it's been reliable for several years (going back to our TT). However, I've talked to Dan (RViBrake3 designer/owner, and former Brake Buddy designer/owner) several times, and I'm confident he will get the kinks worked out.
What is the bypass switch that you mentioned?
2019 Fleetwood Discovery 40D
2017 Ford F-150 LTE FX4 SuperCrew Towed
Fulltimers since 2018