I see that extra price go towards a true 365 day warranty and loads more adjustability than the 150amp hobbywing. I know some people don't use that many adjustments, but i do. Not to mention it's a better deal if you buy it with the progauge. Progauge separately $50, vtx8 separately is $190. Get them both together and its only $210. That's a $30 savings by buying the combo.