When two boats share the same hull type — in this case both the Sessa Marine Key Largo 20 2013 and the Sessa Marine Key Largo 34 2013 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?

Size is the most obvious dividing line here. The Sessa Marine Key Largo 34 2013 measures 32,7 feet overall (2013), giving it roughly 30,7 additional feet of deck space compared to the Sessa Marine Key Largo 20 2013 at 2,0 feet (2013). Weight tells a clearer story for trailering families: the Sessa Marine Key Largo 20 2013 tips the scales at 1 874 lbs — 728 lbs more than the Sessa Marine Key Largo 34 2013 at 1 146 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 150 hp, the Sessa Marine Key Largo 20 2013 has a 148-hp advantage over the Sessa Marine Key Largo 34 2013's 2-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Sessa Marine Key Largo 20 2013 carries 53 gallons versus 29 gallons in the Sessa Marine Key Largo 34 2013. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 8 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.