When two boats share the same hull type — in this case both the AB Inflatables 12 VST 2008 and the AB Inflatables 13 ALX 2008 are inflatable rigid designs with fiberglass construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

On paper these two are close siblings in the size department — AB Inflatables 12 VST 2008 at 12,0 ft versus AB Inflatables 13 ALX 2008 at 13,0 ft. Weight tells a clearer story for trailering families: the AB Inflatables 12 VST 2008 tips the scales at 442 lbs — 114 lbs more than the AB Inflatables 13 ALX 2008 at 328 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 — 30 hp for the AB Inflatables 12 VST 2008 and 25 hp for the AB Inflatables 13 ALX 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. Both carry nearly identical fuel loads — 11 gal and 9 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The AB Inflatables 13 ALX 2008 is rated for 7 passengers, while the AB Inflatables 12 VST 2008 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the AB Inflatables 13 ALX 2008 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The AB Inflatables 13 ALX 2008 comes in at 13 lbs per hp versus 15 lbs per hp for the AB Inflatables 12 VST 2008. 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.