I have to exclude modern( post-2003) S&W revolvers due to the suicide lock now installed on all of them since that date with no choice.
This wouldn't be a problem if the lock were well enough designed so as not to malfunction under recoil.
Some genius designed the lock to rotate counterclockwise to engage.
The gun is stupid. It doesn't know if that's a key going counterclockwise, or if it's clockwise recoil that activated it, it just knows to lock up.
S&W flatly denies that this is a problem at all because it is in their business interests to do so, and because the S&W parent company that makes the locks hath decreed that they are not going away.
I know better.
I called up the Firing Line in neighboring New Hampshire. It's a range where you rent guns before you buy them. I asked them point blank how much trouble had the locks given them. They couldn't give me a number because they'd lost count.
I then had an employee tell me that a S&W rep had come in with all these snubbies and other revolvers with new, improved suicide locks that WOULDN'T fail, and the guy who owned the place said, Okay, you let me put 10,000 rounds through one and we'll see if it fails". The rep packed 'em up and left.
And so I have to exclude that particular line since I've been harping on all along about mechanical simplicity, and here are these revolvers with an extra built in access denial mechanism that is *known* to malfunction. To me, it doesn't matter if it's a 1% chance, I must treat it as if it's a 100% chance. So here, they've basically just nullified the one reason people still buy revolvers anymore.