The PlayCraft Sunfish Series 2010 is a pontoon design and the PlayCraft Ultra Deck Cruiser 20 I/O 2012 is a planing 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.
Size is the most obvious dividing line here. The PlayCraft Sunfish Series 2010 measures 24,0 feet overall (2010), giving it roughly 4,0 additional feet of deck space compared to the PlayCraft Ultra Deck Cruiser 20 I/O 2012 at 20,0 feet (2012). Weight tells a clearer story for trailering families: the PlayCraft Ultra Deck Cruiser 20 I/O 2012 tips the scales at 3 300 lbs - 1 700 lbs less than the PlayCraft Sunfish Series 2010 at 1 600 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 260 hp, the PlayCraft Ultra Deck Cruiser 20 I/O 2012 has a 170-hp advantage over the PlayCraft Sunfish Series 2010's 90-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the PlayCraft Ultra Deck Cruiser 20 I/O 2012 carries 70 gallons versus 66 gallons in the PlayCraft Sunfish Series 2010. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 10 passengers - a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.
Bottom line: The PlayCraft Sunfish Series 2010 at 24,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The PlayCraft Ultra Deck Cruiser 20 I/O 2012 at 20,0 ft wins on trailering ease, likely lower purchase price, and simpler docking - a solid choice for a buyer who wants more boat for less money.