The Campion Allante 705i BR 2012 is a deep-V design and the Campion Explorer 682i SC 2011 is a modified-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.
On paper these two are close siblings in the size department - Campion Allante 705i BR 2012 at 26,2 ft versus Campion Explorer 682i SC 2011 at 25,7 ft. At 4 627 lbs and 4 570 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 430 hp, the Campion Allante 705i BR 2012 has a 110-hp advantage over the Campion Explorer 682i SC 2011's 320-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 682i SC 2011 carries 104 gallons versus 69 gallons in the Campion Allante 705i BR 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 Explorer 682i SC 2011 is rated for 10 passengers, while the Campion Allante 705i BR 2012 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Campion Explorer 682i SC 2011 could be the deciding factor.
Bottom line: Choose the Campion Explorer 682i SC 2011 if your priority is putting more people on the water - it handles 10 passengers and at 25,7 ft it has the deck room to back that rating up comfortably. The Campion Allante 705i BR 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 9 that costs less to run day-to-day.