Gotta say I'm with Dan.
I know a lot of guys that like their Taurus & I have nothing against them, but if I was going to shoot primarily 45 Colt I wouldn't get either. It would be a Super Blackhawk Hunter as dan said, or a Ruger Super Redhawk (if thet aren't available in 45 Colt than a .454)
If you just wang a carry often/shoot occassionaly a regular Super Blackhawk.

Vance in AK.

Matthew 6:33
"But seek first the kingdom of God and His righteousness, and all these things shall be added to you."