I think the Thai stocks are a really good option, especially for newer revolvers where matching stocks to the vintage of the gun is not a big issue. Here is a comparison of a Combat Stocks replica with the S&W factory original.
Ebay/Thai RB Combat stock replica, satin finish, Model 65-5 LS ~1994 (left and front)
S&W SB Combat Stocks made sometime in 1980s, Model 10-1, ~1959 (right and rear)
I think the satin (probably oil) finish on the replica stock looks good with the matte stainless steel finish on the M65. The dark and glossy finish on the factory combats probably looks better on a blued gun (although not necessarily on the old Model 10).