The Xpress 1650DB 2009 is a modified-V design and the Xpress DVX 175 2012 is a deep-V design, so you're likely deciding between two noticeably different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
On paper these two are close siblings in the size department - Xpress 1650DB 2009 at 16,0 ft versus Xpress DVX 175 2012 at 17,5 ft. Weight tells a clearer story for trailering families: the Xpress DVX 175 2012 tips the scales at 1 215 lbs - 800 lbs less than the Xpress 1650DB 2009 at 415 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.
The power gap is worth calling out. Rated to 115 hp, the Xpress DVX 175 2012 has a 85-hp advantage over the Xpress 1650DB 2009's 30-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Xpress DVX 175 2012 is rated for 5 passengers, while the Xpress 1650DB 2009 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Xpress DVX 175 2012 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Xpress DVX 175 2012 comes in at 11 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: Choose the Xpress DVX 175 2012 if your priority is putting more people on the water - it handles 5 passengers and at 17,5 ft it has the deck room to back that rating up comfortably. The Xpress 1650DB 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.