The Advantage 20.5 Classic 2006 vs Advantage 28 Sport Cat BR 2007 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
Size is the most obvious dividing line here. The Advantage 28 Sport Cat BR 2007 measures 28,0 feet overall (2007), giving it roughly 26,0 additional feet of deck space compared to the Advantage 20.5 Classic 2006 at 2,0 feet (2006). Weight tells a clearer story for trailering families: the Advantage 20.5 Classic 2006 tips the scales at 2 345 lbs — 1 910 lbs more than the Advantage 28 Sport Cat BR 2007 at 435 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.
Both boats are rated for 6 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.
Bottom line: The Advantage 28 Sport Cat BR 2007 at 28,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Advantage 20.5 Classic 2006 at 2,0 ft wins on trailering ease, likely lower purchase price, and simpler docking — a solid choice for a buyer who wants more boat for less money.