Both the Triton Boats 18X3 Non-Skid 2009 and the Triton Boats 20XS HP DC 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?
On paper these two are close siblings in the size department - Triton Boats 18X3 Non-Skid 2009 at 18,0 ft versus Triton Boats 20XS HP DC 2010 at 20,2 ft. Weight tells a clearer story for trailering families: the Triton Boats 20XS HP DC 2010 tips the scales at 1 844 lbs - 154 lbs less than the Triton Boats 18X3 Non-Skid 2009 at 1 690 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 - 175 hp for the Triton Boats 18X3 Non-Skid 2009 and 175 hp for the Triton Boats 20XS HP DC 2010. 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 Triton Boats 20XS HP DC 2010 carries 53 gallons versus 37 gallons in the Triton Boats 18X3 Non-Skid 2009. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 600 passengers - a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.
Bottom line: The Triton Boats 20XS HP DC 2010 at 20,2 ft is the right call if deck space, comfort, and entertaining are top of your list. The Triton Boats 18X3 Non-Skid 2009 at 18,0 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.