The Xpress DVX175 2011 is a deep-V design and the Xpress Sportsman Series - X17 Sport 2008 is a modified-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 DVX175 2011 at 17,5 ft versus Xpress Sportsman Series - X17 Sport 2008 at 17,0 ft. At 1 215 lbs and 1 139 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 - 115 hp for the Xpress DVX175 2011 and 115 hp for the Xpress Sportsman Series - X17 Sport 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. Fuel capacity breaks the other way: the Xpress DVX175 2011 carries 30 gallons versus 24 gallons in the Xpress Sportsman Series - X17 Sport 2008. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Xpress DVX175 2011 is rated for 5 passengers, while the Xpress Sportsman Series - X17 Sport 2008 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Xpress DVX175 2011 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Xpress Sportsman Series - X17 Sport 2008 comes in at 10 lbs per hp versus 11 lbs per hp for the Xpress DVX175 2011. 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 DVX175 2011 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 Sportsman Series - X17 Sport 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.