Flashpoint all the way when it comes to FPSs.

Well if you take realism to the extreme its not fun, you wouldn't play a FPS where when you got shot in the stomach you lie on the ground for 30 minutes bleeding to death until you finally died would you? That wouldn't be fun, but it would sure be realistic, right?
Bleeding to death (if no medical attention is available) is an integral part of the ECP mod for OFP