I really enjoyed The Crow: Salvation. I thought it was much better than the second movie but not quite as good ( obviously ) as the first. If you're a fan of the second movie, I dunno why you wouldn't enjoy this one.

As far as the 4th movie goes, the lastest I've heard is that it will be titled The Crow: Wicked Prayer. Edward Furlong will play the Crow. He and his girlfriend are sacrificed in an occultic ceremony by David Boreanaz (Angel TV Series) and his evil crew in which David's character is given some kind of demonic powers. So, when the Crow is brought back from the dead, not only is he fighting his killers, but their leader is some demon empowered being.

I'll definately check it out when it's released.