In all actuality, you won't notice 16.2 vs. 16.7 unless you are a power photoshop user. You don't notice it at all in games and in movies it depends more on your DVD decoder and the quality of the picture and how it interacts with the video card. For instance, I get color banding when using WinDVD, but I get it much less when using Nvidia PureVideo DVD decoder. Basically what I'm saying it, if you aren't a photoshop enthusaist, you don't need to be too concerned about 6-bit vs. 8-bit, because you wont be able to tell a difference.