Both the Misty Harbor 1680EC 2009 and the Misty Harbor 2085CS 2012 are pontoon designs, both built in aluminium, so 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 Misty Harbor 2085CS 2012 measures 20,0 feet overall (2012), giving it roughly 4,0 additional feet of deck space compared to the Misty Harbor 1680EC 2009 at 16,0 feet (2009). Weight tells a clearer story for trailering families: the Misty Harbor 2085CS 2012 tips the scales at 1 700 lbs - 910 lbs less than the Misty Harbor 1680EC 2009 at 790 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 power gap is worth calling out. Rated to 90 hp, the Misty Harbor 2085CS 2012 has a 50-hp advantage over the Misty Harbor 1680EC 2009's 40-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Misty Harbor 2085CS 2012 is rated for 11 passengers, while the Misty Harbor 1680EC 2009 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Misty Harbor 2085CS 2012 could be the deciding factor.
Bottom line: Choose the Misty Harbor 2085CS 2012 if your priority is putting more people on the water - it handles 11 passengers and at 20,0 ft it has the deck room to back that rating up comfortably. The Misty Harbor 1680EC 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 8 that costs less to run day-to-day.