Both the Sundance B18CC 2011 and the Sundance SV205 2008 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 2011 at 17,8 ft versus Sundance SV205 2008 at 20,0 ft. Weight tells a clearer story for trailering families: the Sundance SV205 2008 tips the scales at 1 850 lbs - 555 lbs less than the Sundance B18CC 2011 at 1 295 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 200 hp, the Sundance SV205 2008 has a 110-hp advantage over the Sundance B18CC 2011'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 SV205 2008 carries 45 gallons versus 33 gallons in the Sundance B18CC 2011. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 6 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 Sundance SV205 2008 at 20,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Sundance B18CC 2011 at 17,8 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.