The Sunseeker Manhattan 66 2017 vs Sunseeker Portofino 48 2010 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 Sunseeker Manhattan 66 2017 measures 68,3 feet overall (2017), giving it roughly 16,5 additional feet of deck space compared to the Sunseeker Portofino 48 2010 at 51,8 feet (2010). Weight tells a clearer story for trailering families: the Sunseeker Manhattan 66 2017 tips the scales at 79 807 lbs — 43 362 lbs more than the Sunseeker Portofino 48 2010 at 36 445 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 1 200 hp, the Sunseeker Manhattan 66 2017 has a 600-hp advantage over the Sunseeker Portofino 48 2010's 600-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Sunseeker Manhattan 66 2017 carries 1 056 gallons versus 348 gallons in the Sunseeker Portofino 48 2010. 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 Sunseeker Manhattan 66 2017 is rated for 20 passengers, while the Sunseeker Portofino 48 2010 caps at 15. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sunseeker Manhattan 66 2017 could be the deciding factor.
Bottom line: Choose the Sunseeker Manhattan 66 2017 if your priority is putting more people on the water — it handles 20 passengers and at 68,3 ft it has the deck room to back that rating up comfortably. The Sunseeker Portofino 48 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 15 that costs less to run day-to-day.