Case in point is the Azimut 55S. We're talking a Coupe and 3 x 435's. Range at cruise based on 90% is only 218 miles. Fuel at WOT 1.9 gpnm and at cruise of 20 knots it's 1.8 gpnm. At 12 knots very little better, but at 9.6 knots it drops to 1 gpnm. Only 423 gallons of fuel. And you're not even talking a heavy or truly large boat. On the other hand, some of the economy and performance on 40-50 foot boats is very impressive. The small fuel tanks on so many boats is perhaps my pet peeve. As to MaxPower's point on his dealer, to me it's not just the service you can get in your local area, but that you can get while cruising. I figure if you're cruising 60-80% of your problems and service issues are going to occur away from home. There the network of service providers and the availability of both trained persons and parts becomes the key issue.