The Campion 650i SC 2005 vs Campion Allante 505 BR 2010 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 4,4 additional feet of deck space compared to the Campion Allante 505 BR 2010 at 16,6 feet (2010). At 37 lbs and 128 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
The power gap is worth calling out. Rated to 375 hp, the Campion 650i SC 2005 has a 250-hp advantage over the Campion Allante 505 BR 2010's 125-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 24 gallons in the Campion Allante 505 BR 2010. 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 Allante 505 BR 2010 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.