Matching a deep vee Campion Allante 505ob 2012 against a modified vee Campion Allante 645i SC 2011 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.

Size is the most obvious dividing line here. The Campion Allante 645i SC 2011 measures 23,1 feet overall (2011), giving it roughly 6,5 additional feet of deck space compared to the Campion Allante 505ob 2012 at 16,6 feet (2012). Weight tells a clearer story for trailering families: the Campion Allante 645i SC 2011 tips the scales at 4 037 lbs — 3 909 lbs less than the Campion Allante 505ob 2012 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 320 hp, the Campion Allante 645i SC 2011 has a 195-hp advantage over the Campion Allante 505ob 2012'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 Allante 645i SC 2011 carries 56 gallons versus 24 gallons in the Campion Allante 505ob 2012. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

For family outings this is probably the sharpest distinction between the two. The Campion Allante 645i SC 2011 is rated for 9 passengers, while the Campion Allante 505ob 2012 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Campion Allante 645i SC 2011 could be the deciding factor.