The Princecraft PR 1652MT 2009 is a modified-V design and the Princecraft Vectra 17 2011 is a pontoon 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 - Princecraft PR 1652MT 2009 at 15,8 ft versus Princecraft Vectra 17 2011 at 17,7 ft. Weight tells a clearer story for trailering families: the Princecraft Vectra 17 2011 tips the scales at 1 312 lbs - 862 lbs less than the Princecraft PR 1652MT 2009 at 450 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.
Both boats share a closely matched power ceiling - 35 hp for the Princecraft PR 1652MT 2009 and 50 hp for the Princecraft Vectra 17 2011. 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.
For family outings this is probably the sharpest distinction between the two. The Princecraft Vectra 17 2011 is rated for 6 passengers, while the Princecraft PR 1652MT 2009 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Princecraft Vectra 17 2011 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Princecraft PR 1652MT 2009 comes in at 13 lbs per hp versus 26 lbs per hp for the Princecraft Vectra 17 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 Princecraft Vectra 17 2011 if your priority is putting more people on the water - it handles 6 passengers and at 17,7 ft it has the deck room to back that rating up comfortably. The Princecraft PR 1652MT 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.