When two boats share the same hull type — in this case both the Bennington 20 SLi 2011 and the Bennington 2075FSi 2010 are pontoon designs with aluminum 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 — Bennington 20 SLi 2011 at 20,4 ft versus Bennington 2075FSi 2010 at 22,2 ft. Weight tells a clearer story for trailering families: the Bennington 2075FSi 2010 tips the scales at 2 194 lbs — 583 lbs less than the Bennington 20 SLi 2011 at 1 611 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 70 hp, the Bennington 20 SLi 2011 has a 47-hp advantage over the Bennington 2075FSi 2010's 23-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Bennington 2075FSi 2010 carries 31 gallons versus 24 gallons in the Bennington 20 SLi 2011. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 23 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 2-tube and 23-tube pontoon designs respectively. Tube diameter and gauge affect stability and load capacity — more so than most buyers realize when comparing on paper.
Bottom line: Performance buyers should lean toward the Bennington 20 SLi 2011 and its 70-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Bennington 2075FSi 2010 with its 23-hp rating is the more economical daily driver.