When two boats share the same hull type — in this case both the Achilles LSI-335 2012 and the Achilles SGX-132 2011 are inflatable non rigid designs with inflatable 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 — Achilles LSI-335 2012 at 11,0 ft versus Achilles SGX-132 2011 at 13,2 ft. Weight tells a clearer story for trailering families: the Achilles SGX-132 2011 tips the scales at 212 lbs — 121 lbs less than the Achilles LSI-335 2012 at 91 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 40 hp, the Achilles SGX-132 2011 has a 25-hp advantage over the Achilles LSI-335 2012's 15-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 Achilles SGX-132 2011 is rated for 6 passengers, while the Achilles LSI-335 2012 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Achilles SGX-132 2011 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Achilles SGX-132 2011 comes in at 5 lbs per hp versus 6 lbs per hp for the Achilles LSI-335 2012. 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.

Both are inflatable designs, which means they pack down for compact storage, can be carried in a bag, and are dramatically lighter than equivalent rigid hulls. The trade-off is setup time and the need to monitor tube pressure regularly.