The flat tends to not be as moist as the point when you cook them, due to the extra marbling in the point. But as FatDaddy says better IMO to buy a packer and cook it whole, than pay the extra for just the flat.
There are plenty of good uses for the point beyond just sliced brisket, and at $1.38 / lb round here for a packer, and $3.28 / lb for flats, I'd prefer to buy a 14 lb packer for $20.00 than a just under 6 lb flat, for the same money.
"There is no such thing as a little garlic." A.Baer