Matching a modified vee Parker Boats 2100 Big Bay 2010 against a deep vee Parker Boats 3420 XLD Sport Cabin 2011 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
Size is the most obvious dividing line here. The Parker Boats 3420 XLD Sport Cabin 2011 measures 34,0 feet overall (2011), giving it roughly 13,0 additional feet of deck space compared to the Parker Boats 2100 Big Bay 2010 at 21,0 feet (2010). Weight tells a clearer story for trailering families: the Parker Boats 2100 Big Bay 2010 tips the scales at 265 lbs — 120 lbs more than the Parker Boats 3420 XLD Sport Cabin 2011 at 145 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 800 hp, the Parker Boats 3420 XLD Sport Cabin 2011 has a 600-hp advantage over the Parker Boats 2100 Big Bay 2010's 200-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 5 gal and 4 gal — so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Parker Boats 3420 XLD Sport Cabin 2011 is rated for 10 passengers, while the Parker Boats 2100 Big Bay 2010 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 3420 XLD Sport Cabin 2011 could be the deciding factor.
Bottom line: Choose the Parker Boats 3420 XLD Sport Cabin 2011 if your priority is putting more people on the water — it handles 10 passengers and at 34,0 ft it has the deck room to back that rating up comfortably. The Parker Boats 2100 Big Bay 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.