If you buy a new 625JM - look at it very carefully. The barrel on the one I purchased was not cut square (90 degrees to the bore) and was not crowned properly.
The trigger was an atrocious 10lbs double action and a little over 7 lbs single action.
The first trip to the range, it started having problems with light strikes because the strain screw was not tightened correctly.
Since Smith couldn't turn out a quality gun from the factory, and because I needed the gun for competition and didn't want to wait for Smith to service the gun - AND it needed a trigger job plus I wanted the cylinder chambers chamfered and polished - I took it to an extremely good gunsmith to have the problems corrected.
I got the gun back a week later with a 7lb DA trigger and a 5lb SA trigger, chambers chamfered and polished, strain screw fixed in place with thread lock compound, and the barrel problems addressed.
It is a fun, accurate gun to shoot, and other than the problems that had to be corrected - it has run flawlessly for the past two years.
But, as I've stated - if you're buying a new Smith, look at the gun very closely as they, apparently, have some QC problems now and again.