Its too much like all the other CODs for me. If you like them then you'll probably like this one, the only difference is night vision. i just get annoyed when I shoot a guy in the face and he doesn't die. This has that mod syndrome like Battlefield 2142, they just re-skinned one of their old platforms and gave it a shiny new package to make tons of money. Even if you really did like them you might find yourself getting bored of them. I am a huge splinter cell fan but for some reason I could never finish Chaos Theory.
My suggestion is to go for Crysis, but to each his own.