The spec sheets list the Stacer 319 Seasprite S/S 2027 as v-hull and the Stacer 359 Proline L/S 2026 as aluminium, so check how each hull rides in the conditions you use before you decide.
On paper these two are close siblings in the size department - Stacer 319 Seasprite S/S 2027 at 10,3 ft versus Stacer 359 Proline L/S 2026 at 11,0 ft. At 139 lbs and 166 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 - 6 hp for the Stacer 319 Seasprite S/S 2027 and 15 hp for the Stacer 359 Proline L/S 2026. 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 Stacer 319 Seasprite S/S 2027 is rated for 3 passengers, while the Stacer 359 Proline L/S 2026 caps at 2. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Stacer 319 Seasprite S/S 2027 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Stacer 359 Proline L/S 2026 comes in at 11 lbs per hp versus 23 lbs per hp for the Stacer 319 Seasprite S/S 2027. 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 Stacer 319 Seasprite S/S 2027 if your priority is putting more people on the water - it handles 3 passengers and at 10,3 ft it has the deck room to back that rating up comfortably. The Stacer 359 Proline L/S 2026 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 2 that costs less to run day-to-day.