Both the Sundance NX23 2013 and the Sundance SV23 2010 are modified-V designs, the first built in composite and the second 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 - Sundance NX23 2013 at 23,1 ft versus Sundance SV23 2010 at 23,1 ft. Weight tells a clearer story for trailering families: the Sundance NX23 2013 tips the scales at 2 475 lbs - 465 lbs more than the Sundance SV23 2010 at 2 010 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 250 hp, the Sundance NX23 2013 has a 50-hp advantage over the Sundance SV23 2010's 200-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads - 72 gal and 72 gal - so range won't be a tiebreaker here.
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: Performance buyers should lean toward the Sundance NX23 2013 and its 250-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Sundance SV23 2010 with its 200-hp rating is the more economical daily driver.