Both the Sundance B18CC 2008 and the Sundance SV19 2013 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 - Sundance B18CC 2008 at 17,0 ft versus Sundance SV19 2013 at 18,5 ft. Weight tells a clearer story for trailering families: the Sundance B18CC 2008 tips the scales at 1 640 lbs - 190 lbs more than the Sundance SV19 2013 at 1 450 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 150 hp, the Sundance SV19 2013 has a 60-hp advantage over the Sundance B18CC 2008's 90-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Sundance SV19 2013 carries 40 gallons versus 33 gallons in the Sundance B18CC 2008. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 5 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 SV19 2013 and its 150-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Sundance B18CC 2008 with its 90-hp rating is the more economical daily driver.