Like Turbine Doc, I have the Heath unit.
Nice all around product, good guys on the phone and a great warranty.
That said, if Kennedy weren't at Schied's when my truck was DOA this summer and I needed something quick, I would probably have bought his unit as it has a more elegant connection to the harness.
The warranty on the Heath unit is nice, but it seems like these things work or don't - my last one was over 5 y/o, mounted on the pump.