I've been happy with the system. Plug n play, very reliable , but expensive compared to other systems out there. Another issue is only having one aux channel for the trailer. What I mean is, if you have a dump trailer you need that channel to run the dump box which means you can't run motorized legs also.
That's how my dump trailer is set up with manual legs. Once trailer is hooked up and dumping, who cares about the legs anyway.
The other nice thing about SS tronix is capacity. can handle 120 LEDs on trailer and another 120 on the truck.
...before I forget, SS Tronix system is designed to work with a MFU. If your going to use any other ESC set up, this system isn't right for your build.