Both the Xpress 1650DB 2009 and the Xpress VJ Series - 1756VJ 2008 are modified-V designs, both built in aluminium, 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 - Xpress 1650DB 2009 at 16,0 ft versus Xpress VJ Series - 1756VJ 2008 at 17,0 ft. At 415 lbs and 459 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 - 30 hp for the Xpress 1650DB 2009 and 50 hp for the Xpress VJ Series - 1756VJ 2008. 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 boats are rated for 4 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.
At this size, power-to-weight ratio matters more than outright horsepower. The Xpress VJ Series - 1756VJ 2008 comes in at 9 lbs per hp versus 14 lbs per hp for the Xpress 1650DB 2009. The lower the ratio the more explosive the acceleration - meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.
Bottom line: Performance buyers should lean toward the Xpress VJ Series - 1756VJ 2008 and its 50-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Xpress 1650DB 2009 with its 30-hp rating is the more economical daily driver.