Both the Sundance F19CC 2010 and the Sundance F19FLX 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 F19CC 2010 at 18,8 ft versus Sundance F19FLX 2009 at 18,8 ft. At 1 120 lbs and 1 105 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 - 70 hp for the Sundance F19CC 2010 and 90 hp for the Sundance F19FLX 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 - 24 gal and 24 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: Performance buyers should lean toward the Sundance F19FLX 2009 and its 90-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Sundance F19CC 2010 with its 70-hp rating is the more economical daily driver.