The Champion Boats 21 SX 2007 vs Champion Boats 24 Bay 2008 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 24 Bay 2008 at 23,0 ft. At 2 200 lbs and 2 300 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 350 hp, the Champion Boats 24 Bay 2008 has a 50-hp advantage over the Champion Boats 21 SX 2007's 300-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 24 Bay 2008 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.
For family outings this is probably the sharpest distinction between the two. The Champion Boats 24 Bay 2008 is rated for 6 passengers, while the Champion Boats 21 SX 2007 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Champion Boats 24 Bay 2008 could be the deciding factor.
Bottom line: Choose the Champion Boats 24 Bay 2008 if your priority is putting more people on the water - it handles 6 passengers and at 23,0 ft it has the deck room to back that rating up comfortably. The Champion Boats 21 SX 2007 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.