The choice of S&W Stainless options are mind boggling.
Just to clarify something if you don't know it.
1st gen pistols were the Model 39 and 59. 39 was single stack 8 rounds 59 was 15 rounds. Neither came in stainless. 1970's early 1980s.
2nd Generation mid 1980's
659 and 669 are the stainless version of the model 59. The 669 being CCW and the 659 full size.
The 639 was the 2nd gen full size version of the model 39.
The 3rd generations pistols came out in the late 1980's.
The 3913 that is so widely talked about was the stainless CCW version of the model 39 still with an 8 round mag. (My favorite CCW 9mm) The 3906 was the full size version. They also made a CS9 (Chief Special) which is similar in size and function as the 3913 but with a 7 round mag. Some later variants... the 3913TSW for tactical DA/SA and the 3953 and 3953TSW in SS CCW 7 round DAO.
In the 59 series there is the "famous" as in tons of them made and used in LE, 5906 full size all SS 15 round. And the 5903 ss slide with alloy frame and also the 6906 in a more compact double stack 12 round.. the same as the 669 just with 3rd gen upgrades. Then are a lot of full size TSW (Tactical Smith & Wesson)and DAO variants to the 3rd gen 59 series as well. 5943 DAO, 5926 frame mounted decocker... and on and on it goes into the value series pistols..some available in SS/alloy finishes, 908 and 910 but are usually found in blued finishes. Also the PC (Performance Center) pistols such as the 952. Then there are the RSR variants...then there are the 1911's
So you see your question is really hard to answer properly without you purchasing the SCSW for about $25, studying all the variantions, buying them all, trying them all, find the 1and only 1 you want and then sell the rest



Good Luck
Oh and then we move to the 45ACPs or 10mm or the 40cals.
