The Campion Allante 595ob SC 2013 is a deep-V design and the Campion Explorer 542 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 595ob SC 2013 at 21,0 ft versus Campion Explorer 542 SC 2011 at 19,5 ft. Weight tells a clearer story for trailering families: the Campion Allante 595ob SC 2013 tips the scales at 2 346 lbs - 356 lbs more than the Campion Explorer 542 SC 2011 at 1 990 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 300 hp, the Campion Allante 595ob SC 2013 has a 150-hp advantage over the Campion Explorer 542 SC 2011's 150-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads - 47 gal and 47 gal - so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Campion Allante 595ob SC 2013 is rated for 10 passengers, while the Campion Explorer 542 SC 2011 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 595ob SC 2013 could be the deciding factor.
Bottom line: Choose the Campion Allante 595ob SC 2013 if your priority is putting more people on the water - it handles 10 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Campion Explorer 542 SC 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.