If you want to ask ATI some direct questions regarding their X1600 family of products, Rage3D will be hosting a chat today with Prasad Sristi in their IRC channel.  Plus, it looks like ATI will be giving something away to a lucky participant. More information is available on Rage3D's site.

"...Just a quick reminder that Rage3D will be hosting a chat with Prasad Sristi, ATI's Radeon X1600 product manager, today at 2 PM EDT on irc.gamesurge.net #rage3d. At the end of the chat ATI will be giving away something cool..."