The Carolina Skiff 1780 DLX 2008 is a flat-bottom design and the Carolina Skiff JVX 20 SS 2008 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 - Carolina Skiff 1780 DLX 2008 at 17,0 ft versus Carolina Skiff JVX 20 SS 2008 at 20,0 ft. At 850 lbs and 850 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.
Both boats share a closely matched power ceiling - 90 hp for the Carolina Skiff 1780 DLX 2008 and 70 hp for the Carolina Skiff JVX 20 SS 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.
Both boats are rated for 8 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 Carolina Skiff JVX 20 SS 2008 at 20,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Carolina Skiff 1780 DLX 2008 at 17,0 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.