When two boats share the same hull type — in this case both the Campion Allante 595 OB SC 2010 and the Campion Allante 595i SC 2010 are modified vee designs with fiberglass construction — 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 595 OB SC 2010 at 21,0 ft versus Campion Allante 595i SC 2010 at 21,5 ft. Weight tells a clearer story for trailering families: the Campion Allante 595 OB SC 2010 tips the scales at 2 346 lbs — 2 312 lbs more than the Campion Allante 595i SC 2010 at 34 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.
Both boats share a closely matched power ceiling — 300 hp for the Campion Allante 595 OB SC 2010 and 320 hp for the Campion Allante 595i SC 2010. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. 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 595i SC 2010 is rated for 8 passengers, while the Campion Allante 595 OB SC 2010 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 595i SC 2010 could be the deciding factor.
Bottom line: Choose the Campion Allante 595i SC 2010 if your priority is putting more people on the water — it handles 8 passengers and at 21,5 ft it has the deck room to back that rating up comfortably. The Campion Allante 595 OB SC 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 1 that costs less to run day-to-day.