When two boats share the same hull type — in this case both the Sundance B18CCR 2011 and the Sundance B20CC 2009 are modified vee designs with fiberglass construction — 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 2011 at 17,8 ft versus Sundance B20CC 2009 at 19,8 ft. Weight tells a clearer story for trailering families: the Sundance B18CCR 2011 tips the scales at 1 355 lbs — 1 174 lbs more than the Sundance B20CC 2009 at 181 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 2011 and 90 hp for the Sundance B20CC 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.