The Odyssey Millennium II 2105M2 2005 vs Odyssey Millennium II 2302M2 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 Millennium II 2302M2 2004 measures 22,0 feet overall (2004), giving it roughly 20,0 additional feet of deck space compared to the Odyssey Millennium II 2105M2 2005 at 2,0 feet (2005). At 175 lbs and 205 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.
Both boats are rated for 14 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.
Bottom line: The Odyssey Millennium II 2302M2 2004 at 22,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Odyssey Millennium II 2105M2 2005 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.