The blued finish on my Raging Bull is a very rich, shiny and deep black that has held up to everything I've thrown at it; which includes really, really sweaty hands (which eats up Ruger's SA Revolver color case finish within a matter of hours), left out in humid garage a couple of nights, cylinder face scrubbed with lead away cloth, and general scrubbing with hoppes and other cleaners.
In other words the Taurus blued finish is very pretty and very, very durable in my experience.
My only problem with it is that the finish is so deep and shiny that any grease, oil or hand/finger prints stand out on it like a sore thumb.