The Premier Boats Castaway 221 2006 vs Premier Boats Legend 210 ES 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 - Premier Boats Castaway 221 2006 at 22,0 ft versus Premier Boats Legend 210 ES 2007 at 20,0 ft. At 2 200 lbs and 2 200 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.
Both boats share a closely matched power ceiling - 100 hp for the Premier Boats Castaway 221 2006 and 115 hp for the Premier Boats Legend 210 ES 2007. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup.
For family outings this is probably the sharpest distinction between the two. The Premier Boats Legend 210 ES 2007 is rated for 11 passengers, while the Premier Boats Castaway 221 2006 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Premier Boats Legend 210 ES 2007 could be the deciding factor.
Bottom line: Choose the Premier Boats Legend 210 ES 2007 if your priority is putting more people on the water - it handles 11 passengers and at 20,0 ft it has the deck room to back that rating up comfortably. The Premier Boats Castaway 221 2006 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 10 that costs less to run day-to-day.