Both the Achilles RS-110 2013 and the Achilles SPD-290 2011 are inflatable designs, both built in inflatable, so 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-110 2013 at 11,0 ft versus Achilles SPD-290 2011 at 9,5 ft. At 72 lbs and 95 lbs respectively, both sit in a similar weight class - either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

The Achilles SPD-290 2011 tops out at 8 hp. Engine specs for the Achilles RS-110 2013 aren't listed - confirm with a dealer before selecting an outboard.

Both boats are rated for 4 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.

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. Tube diameter differs: 16 in. (41 cm) on the Achilles RS-110 2013 vs 17 in. (43 cm) on the Achilles SPD-290 2011 - larger tubes generally mean more buoyancy and a drier, more stable ride.