Both the Sundance B18CCR 2012 and the Sundance B20CCR 2009 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 B18CCR 2012 at 17,8 ft versus Sundance B20CCR 2009 at 19,8 ft. Weight tells a clearer story for trailering families: the Sundance B20CCR 2009 tips the scales at 1 890 lbs - 535 lbs less than the Sundance B18CCR 2012 at 1 355 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.
Both boats share a closely matched power ceiling - 90 hp for the Sundance B18CCR 2012 and 90 hp for the Sundance B20CCR 2009. 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 carry nearly identical fuel loads - 33 gal and 33 gal - so range won't be a tiebreaker here.
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 B18CCR 2012 and Sundance B20CCR 2009 are closely matched on the specs that matter most. Test-ride both on the water you actually use, check current dealer pricing, and factor in long-term service access before you sign.