My dad got a Ruger Vaquero a while ago, and it is wicked cool. The one he has came with 2 cylinders: one chambered in .357 Magnum, the other chambered to 9mm (auto). That pistol is a riot to shoot...even the recoil from .357 is manageable...NAY, comfortable. If you have any interest in a single action, I think you could do a lot worse than a Vaquero.
I just got a new Ruger MarkIII Target model that is simply awesome. I have never owned a .22 that cycles and shoots as well as this little pistol does. I have fed it all the cheap, bulk .22 that I have, and it has eaten everything I have fed it. If you have any interest in a rimfire auto I suggest you pick one up...you won't be disappointed!
SP101 to bridge the gap between the LCR and GP. Plus it's .357/.38 like the others in your collection, so you can share ammo. Redhawk after that, then the single-actions if you are so inclined.