The Nautique Byerly Icon Edition 210 2012 is a deep-V design and the Nautique Ski Nautique 196 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 Byerly Icon Edition 210 2012 at 21,0 ft versus Nautique Ski Nautique 196 2009 at 19,0 ft. Weight tells a clearer story for trailering families: the Nautique Byerly Icon Edition 210 2012 tips the scales at 3 900 lbs - 1 260 lbs more than the Nautique Ski Nautique 196 2009 at 2 640 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 Byerly Icon Edition 210 2012 has a 60-hp advantage over the Nautique Ski Nautique 196 2009's 390-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 Icon Edition 210 2012 carries 40 gallons versus 29 gallons in the Nautique Ski Nautique 196 2009. 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 Icon Edition 210 2012 is rated for 12 passengers, while the Nautique Ski Nautique 196 2009 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Nautique Byerly Icon Edition 210 2012 could be the deciding factor.
Bottom line: Choose the Nautique Byerly Icon Edition 210 2012 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 Ski Nautique 196 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.