Matching a deep vee Monterey 278SS 2009 against a modified vee Monterey 400SY 2010 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.

Size is the most obvious dividing line here. The Monterey 400SY 2010 measures 41,0 feet overall (2010), giving it roughly 13,0 additional feet of deck space compared to the Monterey 278SS 2009 at 28,0 feet (2009). At 55 lbs and 22 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

Both boats share a closely matched power ceiling — 425 hp for the Monterey 278SS 2009 and 435 hp for the Monterey 400SY 2010. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Fuel capacity breaks the other way: the Monterey 278SS 2009 carries 89 gallons versus 33 gallons in the Monterey 400SY 2010. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.