I think you make some good points there! I'm still sitting on the fence as to whether to buy on Steam or a hard-copy though. Not sure if the pro's of no CD required to play, and the 'added extras' for which £10 is a bit steep (but it's only a tenner!) outweigh the pro's of having a proper printed manual and box to put on the shelf but no extras! Hmmm... decisions decisions!
Im pretty sure you dont need a cd to play if you do buy the retail, Chalks?
That would be correct. It's half the point of using Steam in the first place.
The advantage of having the CD by buying it from retail is that you won't have to download the full game, but rather install it from a DVD. However, there may still be a day1 patch or update required.