I got the hardened edition so I have had the COD Classic for a while. I am very disappointed with the game though. For some reason it is just ridiculously dark. For those that have played it before, the game starts with you doing a night jump. You can't see anything. There are no brightness/gamma options in the game at all. I personally don't want to mess with my TV settings just to play one single game.
All the talk about a HD version of the game is nothing. It looks just like it did when you played it back in the day. Slap a 720p resolution on it and call it HD.