Revengeance is not just the only game I care about from those 3, but also the first Metal Gear game I really want to play. My interest began when Platinum Games got involved, but the boss trailer was the one that sold me on it. It will be a while before I play it though, given how I don't even have a PS3 nor a 360... A good PC port would help...
In the mean time, I've enjoyed its great music on youtube. Mistral's theme in particular:
http://www.youtube.com/watch?v=8tyc-Efgugs