Matching a modified vee Monterey 243 EX 2008 against a deep vee Monterey 318SSX 2008 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 318SSX 2008 measures 31,0 feet overall (2008), giving it roughly 6,0 additional feet of deck space compared to the Monterey 243 EX 2008 at 25,0 feet (2008). At 5 lbs and 8 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 — 320 hp for the Monterey 243 EX 2008 and 320 hp for the Monterey 318SSX 2008. 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 318SSX 2008 carries 142 gallons versus 57 gallons in the Monterey 243 EX 2008. 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 318SSX 2008 is rated for 9 passengers, while the Monterey 243 EX 2008 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Monterey 318SSX 2008 could be the deciding factor.
Bottom line: Choose the Monterey 318SSX 2008 if your priority is putting more people on the water — it handles 9 passengers and at 31,0 ft it has the deck room to back that rating up comfortably. The Monterey 243 EX 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.