The Xpress Recreational - 1650HI 2008 is a flat-bottom design and the Xpress XP170 Jet 2013 is a tunnel hull 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 Recreational - 1650HI 2008 at 16,0 ft versus Xpress XP170 Jet 2013 at 17,0 ft. Weight tells a clearer story for trailering families: the Xpress XP170 Jet 2013 tips the scales at 920 lbs - 555 lbs less than the Xpress Recreational - 1650HI 2008 at 365 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 90 hp, the Xpress XP170 Jet 2013 has a 60-hp advantage over the Xpress Recreational - 1650HI 2008'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 Recreational - 1650HI 2008 is rated for 5 passengers, while the Xpress XP170 Jet 2013 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Xpress Recreational - 1650HI 2008 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Xpress XP170 Jet 2013 comes in at 10 lbs per hp versus 12 lbs per hp for the Xpress Recreational - 1650HI 2008. 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 Recreational - 1650HI 2008 if your priority is putting more people on the water - it handles 5 passengers and at 16,0 ft it has the deck room to back that rating up comfortably. The Xpress XP170 Jet 2013 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.