When two boats share the same hull type — in this case both the Sundance B18CC 2009 and the Sundance B20CCR 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 B18CC 2009 at 17,8 ft versus Sundance B20CCR 2009 at 19,8 ft. At 164 lbs and 189 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
Both boats share a closely matched power ceiling — 75 hp for the Sundance B18CC 2009 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.
For family outings this is probably the sharpest distinction between the two. The Sundance B20CCR 2009 is rated for 6 passengers, while the Sundance B18CC 2009 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sundance B20CCR 2009 could be the deciding factor.
Bottom line: Choose the Sundance B20CCR 2009 if your priority is putting more people on the water — it handles 6 passengers and at 19,8 ft it has the deck room to back that rating up comfortably. The Sundance B18CC 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.