The Champion Boats 21 SX 2007 vs Champion Boats 22 Sea 2010 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 - Champion Boats 21 SX 2007 at 20,0 ft versus Champion Boats 22 Sea 2010 at 22,0 ft. At 2 200 lbs and 2 250 lbs respectively, both sit in a similar weight class - either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
The power gap is worth calling out. Rated to 300 hp, the Champion Boats 21 SX 2007 has a 50-hp advantage over the Champion Boats 22 Sea 2010's 250-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Champion Boats 22 Sea 2010 carries 90 gallons versus 50 gallons in the Champion Boats 21 SX 2007. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 5 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: Performance buyers should lean toward the Champion Boats 21 SX 2007 and its 300-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Champion Boats 22 Sea 2010 with its 250-hp rating is the more economical daily driver.