When two boats share the same hull type — in this case both the Marquis Yachts 600 2009 and the Marquis Yachts 690 2010 are semi displacement 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?

Size is the most obvious dividing line here. The Marquis Yachts 690 2010 measures 70,0 feet overall (2010), giving it roughly 10,4 additional feet of deck space compared to the Marquis Yachts 600 2009 at 59,7 feet (2009). At 64 lbs and 94 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.

For family outings this is probably the sharpest distinction between the two. The Marquis Yachts 690 2010 is rated for 20 passengers, while the Marquis Yachts 600 2009 caps at 16. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Marquis Yachts 690 2010 could be the deciding factor.