The Sun Tracker Party Barge 21 2010 vs Sun Tracker Party Barge 22 XP3 I/O Regency Edition 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.
On paper these two are close siblings in the size department — Sun Tracker Party Barge 21 2010 at 21,0 ft versus Sun Tracker Party Barge 22 XP3 I/O Regency Edition 2007 at 24,0 ft. Weight tells a clearer story for trailering families: the Sun Tracker Party Barge 22 XP3 I/O Regency Edition 2007 tips the scales at 3 155 lbs — 1 282 lbs less than the Sun Tracker Party Barge 21 2010 at 1 873 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 135 hp, the Sun Tracker Party Barge 22 XP3 I/O Regency Edition 2007 has a 45-hp advantage over the Sun Tracker Party Barge 21 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 Sun Tracker Party Barge 21 2010 carries 42 gallons versus 3 gallons in the Sun Tracker Party Barge 22 XP3 I/O Regency Edition 2007. 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 Sun Tracker Party Barge 22 XP3 I/O Regency Edition 2007 is rated for 14 passengers, while the Sun Tracker Party Barge 21 2010 caps at 11. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sun Tracker Party Barge 22 XP3 I/O Regency Edition 2007 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Sun Tracker Party Barge 21 2010 comes in at 21 lbs per hp versus 23 lbs per hp for the Sun Tracker Party Barge 22 XP3 I/O Regency Edition 2007. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.
The Sun Tracker Party Barge 22 XP3 I/O Regency Edition 2007 is an inflatable design — lighter, easier to store, and quicker to launch from a beach or dock without a slipway. The Sun Tracker Party Barge 21 2010 is a rigid hull, which typically offers a more confident ride in chop and easier maintenance over the long term.
Bottom line: Choose the Sun Tracker Party Barge 22 XP3 I/O Regency Edition 2007 if your priority is putting more people on the water — it handles 14 passengers and at 24,0 ft it has the deck room to back that rating up comfortably. The Sun Tracker Party Barge 21 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 11 that costs less to run day-to-day.