The Odyssey 522C TT 2006 vs Odyssey Millennium 2109M 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.
Size is the most obvious dividing line here. The Odyssey 522C TT 2006 measures 23,0 feet overall (2006), giving it roughly 21,0 additional feet of deck space compared to the Odyssey Millennium 2109M 2004 at 2,0 feet (2004). At 233 lbs and 185 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 Odyssey 522C TT 2006 carries a rated maximum of 175 hp. Engine data for the Odyssey Millennium 2109M 2004 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.
Both boats are rated for 13 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 522C TT 2006 is an inflatable design — lighter, easier to store, and quicker to launch from a beach or dock without a slipway. The Odyssey Millennium 2109M 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 522C TT 2006 at 23,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Odyssey Millennium 2109M 2004 at 2,0 ft wins on trailering ease, likely lower purchase price, and simpler docking — a solid choice for a buyer who wants more boat for less money.