I've been a Stoker user for years, I let go of the purist view (not using electronics) and chose a good nights sleep instead.
I chose the Stoker WiFi because i have multiple cookers and one Stoker unit can handle multiple cooks, beyond that, I think they are all basically the same in function. Benefits of a controller is the "set it and forget it" benefit of knowing exactly what's going on with the cooker AND the protein without peeking "if you're looking, you're not cooking" is REAL. Another benefit I like which the Stoker and I think the others do, is give you the ability to monitor a cook while away from home. I've used this while cooking Ribs or a turkey and monitored my cook while running errands. It's just handy. Do it.