I presume you know that the price difference between the 2 GHz 15" and the 2.16 GHz 17" is only $300--once you add the 2.16 GHz option to the 15", you are paying the same as if you bought the 17"--which has an 8X double-layer superdrive, as opposed to the measly 4x superdrive in the 15" (along with other great stuff...)
Plus, Apple hasn't yet had enough time to resolve the "whine" issue, so it's hit or miss what you end up with, luck of the draw...