Both the Monterey 320SY 2013 and the Monterey M5 2013 are deep-V designs, both built in fibreglass, so the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

Size is the most obvious dividing line here. The Monterey 320SY 2013 measures 33,8 feet overall (2013), giving it roughly 8,0 additional feet of deck space compared to the Monterey M5 2013 at 25,8 feet (2013). Weight tells a clearer story for trailering families: the Monterey 320SY 2013 tips the scales at 13 200 lbs - 8 000 lbs more than the Monterey M5 2013 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 2013 has a 105-hp advantage over the Monterey 320SY 2013'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 320SY 2013 carries 180 gallons versus 80 gallons in the Monterey M5 2013. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.