I have the US carbon version. Never tried the wood, Don't see the point of it for light wind conditions.
I think that the isonic 127 is 1 of the most used racing machines for the medium to heavy weight PWA racers. Those guys use a 9.5 on it when I am probably on my IS122 with a 7.8 or 8.8.
I think that the board performs extremely well in the high end and in the typical down wind PWA slalom tracks with rather "clean wind".
On the contrary, if you're looking for a board that deals with the typical lulls on a lake, I don't think that it is the best choice, although it could work for you as a light weight. I think that it's also a board that needs a more active style to get it onto the plane in light conditions, because of its shorter length. Just my 2 cents.
IS87 / IS101 / IS122 / US147