I think if you disable HDR lighting you can get AA to work on the PC. Ati's Tray Tools or Nvidia's control panel can also force AA, though at least one person reported problems with this (didn't work or caused a crash, depending on mode tried).
I've only just got the Xbox version of the game, but will get the PC version as well in a few months when I am able to build a new computer. I like having camera control and a button to take all items from containers, but the first could be added to the PC version, and the second would only take a minor tweak to place the cursor over the 'take all' button rather than centre it. Several people seem to prefer the left trigger over-the-shoulder view on the Xbox, if not the fact that you need to hold the trigger down.
PC or Xbox 360? (not a lot of comparisons, though)
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