Conservative Catholic Christians should be happy with the Jerusalem Bible. I like the way it reads in both the original French and the English translation.
Actually, I just checked and there is an update. The New Jerusalem Bible which is available online: http://www.catholic.org/bible/
It is a translation into English from a French translation. It’s interesting, reads well and is useful, like Knox’s translation from the original languages is useful, but the Jerusalem Bible ought not be one’s only or primary translation. The RSV is better. Use the JB alongside it.