The AB Inflatables 15 DLX 2013 vs AB-Inflatables Alumina 12 ALX 2017 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.

On paper these two are close siblings in the size department — AB Inflatables 15 DLX 2013 at 15,0 ft versus AB-Inflatables Alumina 12 ALX 2017 at 12,0 ft. Weight tells a clearer story for trailering families: the AB Inflatables 15 DLX 2013 tips the scales at 682 lbs — 367 lbs more than the AB-Inflatables Alumina 12 ALX 2017 at 315 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 75 hp, the AB Inflatables 15 DLX 2013 has a 50-hp advantage over the AB-Inflatables Alumina 12 ALX 2017's 25-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 AB Inflatables 15 DLX 2013 is rated for 9 passengers, while the AB-Inflatables Alumina 12 ALX 2017 caps at 3. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the AB Inflatables 15 DLX 2013 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The AB Inflatables 15 DLX 2013 comes in at 9 lbs per hp versus 13 lbs per hp for the AB-Inflatables Alumina 12 ALX 2017. 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.

The AB-Inflatables Alumina 12 ALX 2017 is trailerable — a genuine lifestyle advantage at this size. The AB Inflatables 15 DLX 2013 isn't listed as trailerable, which may mean a permanent berth or mooring is required.