I like any -4 or earlier the best, as long as it hasn't been abused or been a handloader's experiment gun. I've had a few vintage L frames and they're pretty much equal as far as trigger, fit and so on.
Currently have a -3 with a 6" barrel.

The -6 is a fine revolver, but given the choice between old and new (thankfully there are many out there for reasonable prices), I'll stick with old.