Ruger makes a good gun with their GP100, Redhawk and Super Redhawk lines. I prefer the look and feel of prelock S&W revolvers.
Note that the K-Frame guns are no longer made. You'll have to get an L-Frame gun if you want current factory support. They may be able to support an older gun, but do not count on it. S&W did not have some parts for my S&W K17. This is something to consider as you buy that used S&W Model 15, 19 or 66.
Last edited by tomrkba; January 30, 2013 at 06:04 PM.