Both the Premier Boats Cast-A-Way 251 2008 and the Premier Boats Grand Majestic 250 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 251 2008 at 24,0 ft versus Premier Boats Grand Majestic 250 2007 at 24,0 ft. At 2 450 lbs and 2 450 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 - 150 hp for the Premier Boats Cast-A-Way 251 2008 and 150 hp for the Premier Boats Grand Majestic 250 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 Grand Majestic 250 2007 is rated for 17 passengers, while the Premier Boats Cast-A-Way 251 2008 caps at 14. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Premier Boats Grand Majestic 250 2007 could be the deciding factor.
Bottom line: Choose the Premier Boats Grand Majestic 250 2007 if your priority is putting more people on the water - it handles 17 passengers and at 24,0 ft it has the deck room to back that rating up comfortably. The Premier Boats Cast-A-Way 251 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 14 that costs less to run day-to-day.