agree with pitdog boy, in that one of four pythons owned over the years have "gummed up" never thought that would happen but it did and it is in the shop getting checked over, not sure if it needs cleaning or full re-tune
have owned a smith 28 highway patrolman years ago, but not a 27 which might have or should have smoother lock up, aside from exterior high finish
between pythons and the smith 686, the balance is almost identical now.
pythons were built on the .41 frame so was superior to the k frame, but smith came out with the L frame, and shameless copy of the underlug, aka python
imho, comparing pythons and smiths is like comparing apples and orange, in how the actions are, python has the stacking before the hammer falls, and smith with a reasonable tune up is just as smooth, esp for ppc, hard to describe but other cgn members would know about this to clarify.
regards