The Contender 31 Open 2004 vs Contender 36 Open 2007 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.

The power gap is worth calling out. Rated to 900 hp, the Contender 36 Open 2007 has a 600-hp advantage over the Contender 31 Open 2004's 300-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Contender 31 Open 2004 carries 24 gallons versus 4 gallons in the Contender 36 Open 2007. 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 Contender 36 Open 2007 is rated for 11 passengers, while the Contender 31 Open 2004 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Contender 36 Open 2007 could be the deciding factor.