When two boats share the same hull type — in this case both the Key Largo 1800 LE 2008 and the Key Largo 186 2009 are deep vee 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 — Key Largo 1800 LE 2008 at 17,0 ft versus Key Largo 186 2009 at 18,0 ft. At 185 lbs and 155 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 power gap is worth calling out. Rated to 140 hp, the Key Largo 186 2009 has a 25-hp advantage over the Key Largo 1800 LE 2008's 115-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 35 gal and 35 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Key Largo 186 2009 is rated for 7 passengers, while the Key Largo 1800 LE 2008 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Key Largo 186 2009 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Key Largo 186 2009 comes in at 1 lbs per hp versus 2 lbs per hp for the Key Largo 1800 LE 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.