Re: Thinking of getting another revolver
For all around versatility, Id also go with the 454. I have 7 44s, a 454 Super Redhawk, and a S&W 500. The 500 is obviously the ultimate big bore revolver, but it is huge. If you plan on carrying hunting you may want to keep that in mind. The Super Redhawk seems to be a nice balance between size and power.
Never shot a 460. I think they are pretty close in power to the 500. Keep in mind that you can shoot 454 Casull out of the 460 if you like, but you still have that huge X frame.
If you're thinking about the 454, Ruger came out with a Super Blackhawk in 454. Haven't seen one in person yet but its on their website.
You also may want to check out the 480 Ruger. They aren't as popular, but seem to be a nice balance between a 44 and 454 Casull.