The Skeeter SL 1900 2009 is a modified-V design and the Skeeter SX 200 2013 is a deep-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 SL 1900 2009 at 19,0 ft versus Skeeter SX 200 2013 at 19,7 ft. At 1 975 lbs and 1 900 lbs respectively, both sit in a similar weight class - either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
The power gap is worth calling out. Rated to 200 hp, the Skeeter SL 1900 2009 has a 50-hp advantage over the Skeeter SX 200 2013's 150-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 SX 200 2013 carries 42 gallons versus 30 gallons in the Skeeter SL 1900 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 SL 1900 2009 is rated for 6 passengers, while the Skeeter SX 200 2013 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Skeeter SL 1900 2009 could be the deciding factor.
Bottom line: Choose the Skeeter SL 1900 2009 if your priority is putting more people on the water - it handles 6 passengers and at 19,0 ft it has the deck room to back that rating up comfortably. The Skeeter SX 200 2013 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.