I am with Ed, always like to look at great Smiths.

OP, if price is not an option, go for a 3" M66. If you just have to have a pinned and recessed M19, you will find they go for high prices as well. I would suggested looking at a M19-5 or higher. Not pinned and recessed, but a fine shooting and handling Smith. I would love to have a 3" M66, but the M66-1 2 1/2 inch I have is just fine for me.