The Nautique 200 Closed Bow 2012 is a deep-V design and the Nautique Byerly 210 2009 is a modified-V design, so you're likely deciding between two noticeably different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
On paper these two are close siblings in the size department - Nautique 200 Closed Bow 2012 at 20,0 ft versus Nautique Byerly 210 2009 at 21,0 ft. Weight tells a clearer story for trailering families: the Nautique Byerly 210 2009 tips the scales at 3 800 lbs - 950 lbs less than the Nautique 200 Closed Bow 2012 at 2 850 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 450 hp, the Nautique 200 Closed Bow 2012 has a 41-hp advantage over the Nautique Byerly 210 2009's 409-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Nautique Byerly 210 2009 carries 40 gallons versus 29 gallons in the Nautique 200 Closed Bow 2012. 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 Nautique Byerly 210 2009 is rated for 12 passengers, while the Nautique 200 Closed Bow 2012 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Nautique Byerly 210 2009 could be the deciding factor.
Bottom line: Choose the Nautique Byerly 210 2009 if your priority is putting more people on the water - it handles 12 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Nautique 200 Closed Bow 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.