If youre looking at the Smiths, unless you just gotta have the bling of the Performance Center, Id save the money and put it towards ammo, assuming you can find any.
Smiths really dont need trigger jobs, and the best thing you can do with any of them is, forget they have a SA notch on the hammer, and learn to shoot them DAO.
Id also avoid any that were ported, or having one ported, especially if youre shooting lead bullets. I have a Lew Horton 696 that came Mag Na Ported, and really wish they hadnt. I had a 29 Mag Na Ported back in the 80's when they first started doing them, and pretty much instantly regretted it.
If I were looking at whats available today, Id probably go with one of the 686's, 2.5" or 4". Ive had a couple of the 2.5", and both were accurate and easy shooters. I currently have the "Plus" version. If youre going to be shooting it a lot, and with full power loads, Id go with the L frame over the K frame.
Personally, Im not a big fan of the newer "classic" line. Im sure they are good guns and shooters, but they arent "classic".
I really like the older K frames, and have a number of them in .38, 38/200 (38 S&W), and 357. Great guns, great shooters, and they have "the lines".
I also really like the N frames. A 4" Model 28 or 27 is a beautiful thing.
Fair warning here, the bad thing about S&W's is, they are very addictive. The Lays tatter chips of revolvers. Once you start, you cant stop.