Well, I am somewhat influenced by the extremely positive review of the M-19 Classic in the American Rifleman. They touted its' accuracy and engineering.
NEVER trust any printed "review", they are reliant on the gun manufacturers and in many cases nothing but a fluff job. You can put makeup on a pig and say lots of nice things about it but a pig is still a pig.
In the case of the Model 19 Classic it is a well made and accurate revolver. However you will have to tune the 12 lbs. trigger to something lighter and if it has a serrated trigger wear gloves. Because S&W's serrated triggers are sharp enough to leave you bleeding. Finally it will have that infernal lock.
On the plus side the use of MIM parts in these revolver make tuning the lockwork a matter of changing out the factory 16 lbs. rebound spring for a 14 lbs. rebound spring and filing the Strain Screw 0.030 inch shorter. Do that and you have a single action trigger bread at 3.0 lbs and a Double Action trigger close to 9 lbs. The plus aspect for the MIM parts is that they are so consistent, nothing needs smoothing and no additional fitting is required.
BTW, a few years back I picked up a vintage 2 1/2 inch 19-3, one of the "good ones" per some experts who believe older is better. Based on it's appearance it was a sock drawer special that had only been fired 3 times on alternating chambers). BTW, that is the factory standard test procedure and the cylinder on my 19-3 had evidence of only 3 shots fire on the face of the cylinder. All I can say is that S&W must have been using extremely sensitive primers back then. Because the first time out with my own CCI Primed hand loads I could not get more that 1 out of 6 to fire in double action and in single action only 3 to 4 out of 6 would fire. In looking it over the problem was very obvious, it failed the Dime test due to a short hammer nose. Solved that problem with a new Powers Custom Hammer Nose that was long enough to require so fitting for length and it now functions with 100% reliability. To sum it up, S&W had a Monday and a Friday every single week before our modern era and in the case of my 19-3 the quality was a bit less than perfect. BTW, single action trigger on my 19-3 checked in at 3.2 lbs and the DA pull was 9.0 lbs. So there was a time when you could expect a trigger with a nice weight and stroke, unlike today's revolvers which ship with a lawyer approved 12 lbs. trigger.
Now as for shootability, once sorted the model 19 is a fantastic handgun. It's well balanced and not nearly as barrel heavy as the 686. I can also tell you that my 2 1/2 inch version is actually rather easy to shoot with good accuracy. Yes, it does have a shorter sight radius. However that means that it also has a tighter "fill" between front sight and rear notch and that tighter fill means it is easier for me to see the front blade is well centered. As a result when I am in the mood to shoot long with my model 19 I can put a target 50 yards out and put 12 out of 12 into a 11 inch circle and 8 out of 12 inside 6 inches.