The Cerbo can do everything the BMV-712 does.I decided to do the Cerbo GX with the touch 50 screen and I didn't want the extra screen that came with the 712. The cerbo has a couple relays and multiple inputs for temp and tank levels and also some digital inputs (which I doubt I'll ever use). It can connect to the inverter and solar charger, but I don't think it really talks with the the Orion (but could turn it on/off via relay I guess). I will leverage the temp sensors to suppress charging for sure and to trigger heating pads on batteries and water tank. When you say the 712 can control your charge sources, are you saying it can turn them on or off or is there something more to it than that?
The Orion-TR is pretty much limited to relay input control.