I think people really need to realsise something here.

Mischa Heemskerk won the race not a F18, Mischa is one of the World's best cat sailors, and through my reckoning he would of won it on a 20 or a F18. The sailors are the most important thing on a boat.

If you really wanted to ask Mischa i am sure he would give you his unbiased thoughts to which was best because he is one of the most genuine guys i have met.