Both the Monterey 234 FS 2008 and the Monterey 330 SY 2008 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 330 SY 2008 measures 35,0 feet overall (2008), giving it roughly 11,0 additional feet of deck space compared to the Monterey 234 FS 2008 at 24,0 feet (2008). Weight tells a clearer story for trailering families: the Monterey 330 SY 2008 tips the scales at 14 200 lbs - 9 900 lbs less than the Monterey 234 FS 2008 at 4 300 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.
Both boats share a closely matched power ceiling - 320 hp for the Monterey 234 FS 2008 and 320 hp for the Monterey 330 SY 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 330 SY 2008 carries 210 gallons versus 62 gallons in the Monterey 234 FS 2008. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Bottom line: The Monterey 330 SY 2008 at 35,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Monterey 234 FS 2008 at 24,0 ft wins on trailering ease, likely lower purchase price, and simpler docking - a solid choice for a buyer who wants more boat for less money.