The Skeeter MX 1825 2013 is a deep-V design and the Skeeter SX 170 2009 is a modified-V design, so you're likely deciding between two noticeably different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
On paper these two are close siblings in the size department - Skeeter MX 1825 2013 at 18,3 ft versus Skeeter SX 170 2009 at 16,0 ft. Weight tells a clearer story for trailering families: the Skeeter MX 1825 2013 tips the scales at 2 075 lbs - 885 lbs more than the Skeeter SX 170 2009 at 1 190 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 200 hp, the Skeeter MX 1825 2013 has a 85-hp advantage over the Skeeter SX 170 2009's 115-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Skeeter MX 1825 2013 carries 33 gallons versus 20 gallons in the Skeeter SX 170 2009. 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 Skeeter MX 1825 2013 is rated for 6 passengers, while the Skeeter SX 170 2009 caps at 3. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Skeeter MX 1825 2013 could be the deciding factor.
Bottom line: Choose the Skeeter MX 1825 2013 if your priority is putting more people on the water - it handles 6 passengers and at 18,3 ft it has the deck room to back that rating up comfortably. The Skeeter SX 170 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 3 that costs less to run day-to-day.