Matching a modified vee Campion Allante 505i BR 2011 against a deep vee Campion Chase 600ob BR 2012 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 505i BR 2011 measures 17,1 feet overall (2011), giving it roughly 15,1 additional feet of deck space compared to the Campion Chase 600ob BR 2012 at 2,0 feet (2012). Weight tells a clearer story for trailering families: the Campion Chase 600ob BR 2012 tips the scales at 2 346 lbs — 2 218 lbs less than the Campion Allante 505i BR 2011 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 300 hp, the Campion Chase 600ob BR 2012 has a 175-hp advantage over the Campion Allante 505i BR 2011'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 Chase 600ob BR 2012 carries 47 gallons versus 24 gallons in the Campion Allante 505i BR 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 505i BR 2011 is rated for 6 passengers, while the Campion Chase 600ob BR 2012 caps at 1. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Campion Allante 505i BR 2011 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Campion Allante 505i BR 2011 comes in at 1 lbs per hp versus 8 lbs per hp for the Campion Chase 600ob BR 2012. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.
Bottom line: Choose the Campion Allante 505i BR 2011 if your priority is putting more people on the water — it handles 6 passengers and at 17,1 ft it has the deck room to back that rating up comfortably. The Campion Chase 600ob BR 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 1 that costs less to run day-to-day.