Fotis: DO NOT have any "new" (lawyer lock!) Smith & Wesson revolving pistols - never have, never will!
My all time favorite 357 Smith & Wesson would be my Model 66-1 6" with target trigger target hammer.
I bought it new way back when and used it to "qualify" with, while on the department I worked for.
I qualified "Distinguished Expert" probably 20 times out of the 30 times I used it for qualifications.
My second favorite (and shoot it a tad better than with my Model 66!) is my wonderful 6" Model 686.
I pray for the day the dimwits at Smith & Wesson will realize their mistake (like the dimwits at Remington did with their "J" locked Model 700's!) and rid their handsome revolvers of the useless, disconcerting, value destroying and ugly lawyer locks!
Alas I am sure there are enough older "lock-less" Smith & Wesson revolvers out there to keep me "shootin" for the rest of my life.
Hold into the wind
VarmintGuy