Try Aboards Z-series 133x40 http://www.aboards.eu/z_series.html" onclick="window.open(this.href);return false;
Very good upwind. It is very flexible board, will be goo on chop as well as on the flat water.
I have ride couple of boards. I think Spleen is good in chop. Now I have Aboards X series 2008. Board is more wakestyle but very good in chop. Because of more narrow tips it is less effect of chop on board. It has stiffer edge and i can edge very good in chop. Overall very good.