How much do you weigh?
What sails will you be using on it?
In what winds?
The 86L fish is my light wind board or my formula board as Elmo refers to it as

I use a 5.7m in winds from 15 to 20 knots MAX! Even when it gets around the 18 to 20 knots I am well powered to being over powered. Keeping in mind I weigh 63kg's
My 76L fish is my all rounder with a 5m. This is my favourate combo as its the closest I can get to the feel of surfing without being on a surfboard

If you cant get a fish the next best board would be the EVO. Another kick ass board


I have the 70L but thats another topic