The Campion 650i SC 2005 vs Campion S 505i SS 2006 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 650i SC 2005 measures 21,0 feet overall (2005), giving it roughly 5,0 additional feet of deck space compared to the Campion S 505i SS 2006 at 16,0 feet (2006). Weight tells a clearer story for trailering families: the Campion S 505i SS 2006 tips the scales at 1 974 lbs — 1 937 lbs less than the Campion 650i SC 2005 at 37 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 375 hp, the Campion 650i SC 2005 has a 240-hp advantage over the Campion S 505i SS 2006's 135-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Campion 650i SC 2005 carries 51 gallons versus 19 gallons in the Campion S 505i SS 2006. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
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 650i SC 2005 at 21,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Campion S 505i SS 2006 at 16,0 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.