The Parker Boats 2100 Big Bay 2013 vs Parker Boats 2520 SLD Sport Cabin 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 300 hp, the Parker Boats 2520 SLD Sport Cabin 2007 has a 100-hp advantage over the Parker Boats 2100 Big Bay 2013's 200-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Parker Boats 2520 SLD Sport Cabin 2007 carries 173 gallons versus 44 gallons in the Parker Boats 2100 Big Bay 2013. 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 Parker Boats 2520 SLD Sport Cabin 2007 is rated for 7 passengers, while the Parker Boats 2100 Big Bay 2013 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Parker Boats 2520 SLD Sport Cabin 2007 could be the deciding factor.
Bottom line: Choose the Parker Boats 2520 SLD Sport Cabin 2007 if your priority is putting more people on the water — it handles 7 passengers and at 25,0 ft it has the deck room to back that rating up comfortably. The Parker Boats 2100 Big Bay 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.