Both the Campion Allante 645i SC 2011 and the Campion Explorer 602 CC 2010 are modified-V designs, both built in fibreglass, so the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

On paper these two are close siblings in the size department - Campion Allante 645i SC 2011 at 23,1 ft versus Campion Explorer 602 CC 2010 at 22,3 ft. Weight tells a clearer story for trailering families: the Campion Allante 645i SC 2011 tips the scales at 4 037 lbs - 1 737 lbs more than the Campion Explorer 602 CC 2010 at 2 300 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 95-hp advantage over the Campion Explorer 602 CC 2010's 225-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 Explorer 602 CC 2010 carries 64 gallons versus 56 gallons in the Campion Allante 645i SC 2011. 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 Explorer 602 CC 2010 caps at 7. 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.