I've have a 44mag model that I absolutely love and a 454 model that I bought and should have next week. They are great revolvers, well built and strong, you can fire full house loads all day long through them. They are also very accurate, my 44 RB is one of my most accurate revolvers. The action is an improved version of S&W's action, but S&W's still have a better trigger. The porting is great, it really reduces muzzle flip, of my 44 mag revolvers the RB has the least amount of recoil and muzzle flip. The only downsides to the porting is it makes the revolver obnoxiously loud and if you shoot lead bullets you will get some lead build up on the outside of the barrel above the ports.
One thing I really don't like about the Raging Bull is the lack of availability of aftermarket sights, but that's a problem for sight manufactures and not Taurus.