Probably go stone cold but I've largely got rid of my 360 disk collection as digital offers have popped up over time, and just noticed this has been reduced to £9.99 if you have a gold membership. It was a rather low-key announcement but it's recently been made available to play on XBOX One via backwards compatibility.
Arguably one of the better Call of Duty games despite the Treyarch haters and they haven't gone back to WW2 since other than a couple of cameos in the Black Ops series.
Went on last night and there were a couple of thousand playing online and no cheaters/glitchers.
Cheaper than the usual places are currently charging for a disc copy - going to sell mine now.