I've had my RVI3 only a short time and have only used it on (2) 20 mile test runs. This unit is really compact and easy to set up. It literally takes 2 minutes to set it up in the toad. To remove it takes 30 seconds. The unit itself is very small and could fit in a shopping bag.
I do not care for the computer tablet (7"-8") that comes with it. It's too large and takes up too much space. The good news (wrote direct from the manufacturer) is it is not required for the system to work if you so choose. The tablet is for initial programming of settings, testing, and monitoring. The actual brake unit in the toad can also be programmed through itself without the tablet if need be. I also don't like the charging cables (one for the tablet and one for the relay antennae [if needed] ) as they look proprietary to only these units.
During testing, the system worked great (so far). The customer support by email was also excellent. Very fast, thorough detailed responses, not some pre-programmed cut and paste job.
Exploring the west.