Both the Premier Boats Cast-A-Way 221 2012 and the Premier Boats SunSation 210 RE 2007 are pontoon designs, both built in aluminium, so the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?
On paper these two are close siblings in the size department - Premier Boats Cast-A-Way 221 2012 at 22,4 ft versus Premier Boats SunSation 210 RE 2007 at 20,0 ft. At 2 050 lbs and 2 100 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 - 115 hp for the Premier Boats Cast-A-Way 221 2012 and 115 hp for the Premier Boats SunSation 210 RE 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.
Both boats are rated for 11 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: The Premier Boats Cast-A-Way 221 2012 at 22,4 ft is the right call if deck space, comfort, and entertaining are top of your list. The Premier Boats SunSation 210 RE 2007 at 20,0 ft wins on trailering ease, likely lower purchase price, and simpler docking - a solid choice for a buyer who wants more boat for less money.