Great thanks-

Has the system been reliable?
Have you been able to verify the accuracy of the readings?
Did it actually help in determining an optimum cruising speed or at least what is not an optimum speed! What sort of consumption variations did you find?
Did you manage to check the fuel flow figures for your engines (in the feed and return pipes that is) before you bought the system to make sure they were within the spec for the 3200? This is where I'm having some problem deciding as Navico can't advise if suitable for any particular engine.

Nick