I only have two “new” ones, and they aren’t all that new. They are a 340PD and a 329PD. (Yes, both have the lock.) Both have been fine, as far as fit, finish, and mechanics. The 329 has a pretty nasty looking barrel, but it seems to shoot OK. I’m not sure how!

I have to admit, I wish it had a barrel that looked like it belonged on a fairly expensive revolver, which the 329 is, to me. If you’re concerned, take a look at the barrel before you buy. Styling is a little “modern,” for my taste, but, well, they are modern guns. I knew they wouldn’t look like ‘60s production when I ordered them. As to the lock, I have no idea whether it works as designed or not. Don’t recall ever putting a key in either one.
I’ve got my eyes on several other new models, and I will probably buy another couple before I give up buying entirely.

D) I don’t care for the silly key-lock thing, but it’s not a total deal-breaker, if the aesthetics aren’t wrecked. J-frame hammer-models are wrecked. Off the ugly scale. Won’t be likely to buy one of those. The K-, L-, and N-frames haven’t suffered nearly as badly, so there are some possibilities, IMO.