When two boats share the same hull type — in this case both the Achilles RS-140 2008 and the Achilles SU-16 2013 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 RS-140 2008 at 14,0 ft versus Achilles SU-16 2013 at 16,0 ft. Weight tells a clearer story for trailering families: the Achilles SU-16 2013 tips the scales at 371 lbs — 257 lbs less than the Achilles RS-140 2008 at 114 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 Achilles SU-16 2013 tops out at 75 hp. Engine specs for the Achilles RS-140 2008 aren't listed — confirm with a dealer before selecting an outboard.

Both boats are rated for 9 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.

The Achilles SU-16 2013 is an inflatable design — lighter, easier to store, and quicker to launch from a beach or dock without a slipway. The Achilles RS-140 2008 is a rigid hull, which typically offers a more confident ride in chop and easier maintenance over the long term.