We sell Formula and Donzi, all are Livorsi I assume. Yes there is some confusion, the average boater has no idea what is going on. The recent Powerboat Mag article didn't help, just made it more confusing. I trust my boat builders so I'm OK there.I remember years ago I had a Gaffrig liquid filled speedo in my old raceboat,years ahead of the old Keller speedo we all used to use. Wonderif John Keller is still around?