The Monterey 318SC 2008 is a deep-V design and the Monterey M5 2010 is a modified-V design, so you're likely deciding between two noticeably 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 318SC 2008 measures 31,0 feet overall (2008), giving it roughly 5,2 additional feet of deck space compared to the Monterey M5 2010 at 25,8 feet (2010). Weight tells a clearer story for trailering families: the Monterey 318SC 2008 tips the scales at 8 500 lbs - 3 300 lbs more than the Monterey M5 2010 at 5 200 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.

The power gap is worth calling out. Rated to 425 hp, the Monterey M5 2010 has a 105-hp advantage over the Monterey 318SC 2008's 320-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Monterey 318SC 2008 carries 142 gallons versus 80 gallons in the Monterey M5 2010. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

For family outings this is probably the sharpest distinction between the two. The Monterey M5 2010 is rated for 12 passengers, while the Monterey 318SC 2008 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Monterey M5 2010 could be the deciding factor.