When two boats share the same hull type — in this case both the Marathon Grumman Classic 1680LC 2013 and the Marathon Grumman Heritage H2085CPR 2013 are pontoon designs with aluminum 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 Marathon Grumman Classic 1680LC 2013 measures 16,0 feet overall (2013), giving it roughly 14,0 additional feet of deck space compared to the Marathon Grumman Heritage H2085CPR 2013 at 2,0 feet (2013). At 146 lbs and 189 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 power gap is worth calling out. Rated to 100 hp, the Marathon Grumman Heritage H2085CPR 2013 has a 60-hp advantage over the Marathon Grumman Classic 1680LC 2013'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 Marathon Grumman Heritage H2085CPR 2013 is rated for 12 passengers, while the Marathon Grumman Classic 1680LC 2013 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Marathon Grumman Heritage H2085CPR 2013 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Marathon Grumman Heritage H2085CPR 2013 comes in at 2 lbs per hp versus 4 lbs per hp for the Marathon Grumman Classic 1680LC 2013. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.
Both are 2-tube and 2-tube pontoon designs respectively. Tube diameter and gauge affect stability and load capacity — more so than most buyers realize when comparing on paper.
Bottom line: Choose the Marathon Grumman Heritage H2085CPR 2013 if your priority is putting more people on the water — it handles 12 passengers and at 2,0 ft it has the deck room to back that rating up comfortably. The Marathon Grumman Classic 1680LC 2013 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.