The Sundance B20 CX 2006 vs Sundance SV23 2012 comparison sits squarely in the category of decisions where specs alone won't tell the whole story: intended use, storage, and long-term ownership costs all factor in.
Size is the most obvious dividing line here. The Sundance SV23 2012 measures 23,1 feet overall (2012), giving it roughly 4,1 additional feet of deck space compared to the Sundance B20 CX 2006 at 19,0 feet (2006). Weight tells a clearer story for trailering families: the Sundance SV23 2012 tips the scales at 2 150 lbs - 555 lbs less than the Sundance B20 CX 2006 at 1 595 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 SV23 2012 has a 120-hp advantage over the Sundance B20 CX 2006's 130-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 SV23 2012 carries 72 gallons versus 33 gallons in the Sundance B20 CX 2006. 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 Sundance B20 CX 2006 is rated for 11 passengers, while the Sundance SV23 2012 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sundance B20 CX 2006 could be the deciding factor.
Bottom line: Choose the Sundance B20 CX 2006 if your priority is putting more people on the water - it handles 11 passengers and at 19,0 ft it has the deck room to back that rating up comfortably. The Sundance SV23 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 8 that costs less to run day-to-day.