The Campion Infinyte i3 2012 is a tunnel hull design and the Campion Infinyte i4 2012 is a catamaran 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 - Campion Infinyte i3 2012 at 12,0 ft versus Campion Infinyte i4 2012 at 14,0 ft. Weight tells a clearer story for trailering families: the Campion Infinyte i4 2012 tips the scales at 710 lbs - 530 lbs less than the Campion Infinyte i3 2012 at 180 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 Campion Infinyte i3 2012 carries a rated maximum of 10 hp. Engine data for the Campion Infinyte i4 2012 wasn't available in our records - check the manufacturer's spec sheet before sizing a motor.
For family outings this is probably the sharpest distinction between the two. The Campion Infinyte i4 2012 is rated for 5 passengers, while the Campion Infinyte i3 2012 caps at 3. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Campion Infinyte i4 2012 could be the deciding factor.
Bottom line: Choose the Campion Infinyte i4 2012 if your priority is putting more people on the water - it handles 5 passengers and at 14,0 ft it has the deck room to back that rating up comfortably. The Campion Infinyte i3 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 3 that costs less to run day-to-day.