The Campion 602 CC 2009 is a modified-V design and the Campion Allante 535i 2013 is a deep-V design, so you're likely deciding between two noticeably 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 602 CC 2009 measures 22,0 feet overall (2009), giving it roughly 4,2 additional feet of deck space compared to the Campion Allante 535i 2013 at 17,8 feet (2013). At 2 300 lbs and 2 400 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 225 hp, the Campion 602 CC 2009 has a 75-hp advantage over the Campion Allante 535i 2013's 150-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 602 CC 2009 carries 64 gallons versus 24 gallons in the Campion Allante 535i 2013. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 7 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 602 CC 2009 at 22,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Campion Allante 535i 2013 at 17,8 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.