I don't understand all the praise for this game. The ideas are great, and the locations and important characters are all well done... but the controls are about the worst I've ever come across. It's so clunky and awkward. I can't even think of another game with crappier controls off the top of my head. It ruined the game for me. Absolution is so much better, there is no comparison. There are a few changes to the core game that the real hardcore fans of the older Hitman titles don't seem to like, but IMO it does everything amazingly well.
Yes it has a multi-part linear story, but there is still an incredible amount of freedom with how you can handle each situation. All of the same gameplay elements are intact, and in fact much improved. Even more freedom for making strategic choices than the previous games! All-in-all, I would even go as far as to say Blood Money sucks bad in comparison to Absolution.