RE: isonic 111 vs 115 (06 model)
In the absence of other comments I can offer the following:
Having owned a Is125 and now a 133, I think the new generation iSonics are more intuitive to sail, but seem to need a little more power to get going.
Between this and last year *Board seems to have improved their top end control and speed, but at the expense of a little early planing ability. I feel the board has got faster and its easier to get speed up quickly, but this is mostly because the board is easeir to control.