Probably my favorite revolver is a Blackhawk (or better yet, Bisley Blackhawk) .45 Colt convertible model. I suggest the convertible model because for just a little extra, you get a .45 ACP cylinder so you have two cartridges and a wide range of loads and power levels available.
You can load the .45 Colt warm, to meet and even exceed the 44 Magnum, and with the ACP cylinder you can not only shoot .45 ACP, but also the more potent .45 Super. There is even an article on "Ruger only" .45 ACP loads that mimic the 460 Rowland.
Very versatile and affordable and a LOT of fun to shoot, a lot of bang for your buck. Ruger offers the convertible Blackhawk .45 Colt/.45 ACP in blued and stainless with 4 5/8" - 7 1/2" barrels. There are some 5.5" stainless Bisley convertible models too, I just picked one up.