The Campion Allante 505 BR 2011 vs Campion Allante A18 IO BR 2022 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 Campion Allante A18 IO BR 2022 measures 20,0 feet overall (2022), giving it roughly 3,4 additional feet of deck space compared to the Campion Allante 505 BR 2011 at 16,6 feet (2011). Weight tells a clearer story for trailering families: the Campion Allante A18 IO BR 2022 tips the scales at 2 686 lbs — 2 558 lbs less than the Campion Allante 505 BR 2011 at 128 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 300 hp, the Campion Allante A18 IO BR 2022 has a 175-hp advantage over the Campion Allante 505 BR 2011's 125-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 24 gal and 25 gal — so range won't be a tiebreaker here.
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 Campion Allante A18 IO BR 2022 at 20,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Campion Allante 505 BR 2011 at 16,6 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.