Being a die hard Byrons guy from planes to cars it hurt having to find something new. We went to VP and I've tried Tessman, Lutz and the ProCar.
Tessman made great power and decent run time but three gallons and you're looking for bearings
Lutz I could of sworn was just repackaged byrons. Really good life (6 gallons) on internals, with a pretty bronze finish on the internals.
Currently running ProCar, seems to be an inbetween of Lutz and Tessman for my self. Better power then lutz and way better economy then Tessman.
These are my findings, doesn't mean they are right lol