The Odyssey 725CO-4 Gate 2006 vs Odyssey Millennium 2515M 2004 comparison sits squarely in the category of decisions where specs alone won't tell the whole story: intended use, storage, and long-term ownership costs all factor in.
On paper these two are close siblings in the size department - Odyssey 725CO-4 Gate 2006 at 24,0 ft versus Odyssey Millennium 2515M 2004 at 24,0 ft. Weight tells a clearer story for trailering families: the Odyssey 725CO-4 Gate 2006 tips the scales at 2 370 lbs - 150 lbs more than the Odyssey Millennium 2515M 2004 at 2 220 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 Odyssey 725CO-4 Gate 2006 carries a rated maximum of 135 hp. Engine data for the Odyssey Millennium 2515M 2004 wasn't available in our records - check the manufacturer's spec sheet before sizing a motor.
Both boats are rated for 15 passengers - a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.
The Odyssey 725CO-4 Gate 2006 is an inflatable design - lighter, easier to store, and quicker to launch from a beach or dock without a slipway. The Odyssey Millennium 2515M 2004 is a rigid hull, which typically offers a more confident ride in chop and easier maintenance over the long term.
Bottom line: The Odyssey 725CO-4 Gate 2006 and Odyssey Millennium 2515M 2004 are closely matched on the specs that matter most. Test-ride both on the water you actually use, check current dealer pricing, and factor in long-term service access before you sign.