Both the Monterey 204FS 2011 and the Monterey 340SY 2010 are modified-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 340SY 2010 measures 35,3 feet overall (2010), giving it roughly 15,7 additional feet of deck space compared to the Monterey 204FS 2011 at 19,6 feet (2011). Weight tells a clearer story for trailering families: the Monterey 340SY 2010 tips the scales at 14 200 lbs - 11 100 lbs less than the Monterey 204FS 2011 at 3 100 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 375 hp, the Monterey 340SY 2010 has a 105-hp advantage over the Monterey 204FS 2011's 270-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 340SY 2010 carries 210 gallons versus 36 gallons in the Monterey 204FS 2011. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

The Monterey 204FS 2011 is rated for up to 1 people. Passenger data for the Monterey 340SY 2010 wasn't available.