Hi mabbot,
The board I was on is a custom wave jumping machine, 125 litres (I think!), double carbon sandwich, a bit heavy but bulletproof. It was built for Hardie to slash and jump at Corros in light winds. I'm 85 kilos and this combo was perfect for the early sesh on that particular day... when the wind picked up I used my 80 litre Acid, but then jumped back on the custom when the wind dropped off a bit.
Not sure what an equivalent board would be, you certainly can't buy this board anywhere for love nor money. I think that lots more people would enjoy themselves in the waves if they had a bit more flotation for lighter days, instead of grumbling on the beach as soon as the wind dropped to just under 15 knots... anyway who cares, more waves for me