The Advantage 21 SR 2007 vs Advantage 21 SR BR 2009 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 — Advantage 21 SR 2007 at 21,0 ft versus Advantage 21 SR BR 2009 at 21,0 ft. At 2 975 lbs and 2 975 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.
For family outings this is probably the sharpest distinction between the two. The Advantage 21 SR BR 2009 is rated for 7 passengers, while the Advantage 21 SR 2007 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Advantage 21 SR BR 2009 could be the deciding factor.
Bottom line: Choose the Advantage 21 SR BR 2009 if your priority is putting more people on the water — it handles 7 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Advantage 21 SR 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.