Thank you for all the replies and thanx Wouter for the detailed posts they are really helping (sorry for the trouble)

Its seems that the F16 is whats holding me back from buying a Nacra A3. Which F16 would you guys recommend for me? that way I could look into that specific design and compare it to the A3. So if price wasnt an issue is the F16 still a better choice than the A3? would it be as fast in app. 7 knots?

Oh and has any1 heard of any catamaran events in Dubai? Im only an hour plane ride away and if there are A-class or F16 events over there that would definetly effect my decision.

Thanx again