Fantastic, I was leaning towards high-side due to the on resistance, good to hear there are no hidden "gotchas" in selecting hi/lo. gonna attempt to once again understand the losses due to freq of switching (I understand the theory, its the digging the values out of the data sheet that still evade me) and see if I should just go to the minimum (8hz iirc) or if the losses are low enough I can just keep it in whatever freq range keeps it quietest, mechanically and electrically.