I opted for Wolffs in my 629 and my two CA Bulldogs in order to lighten the DA. I have found that I am a little more consistent, DA-wise, with the new springs installed.
I have left my 2 S&W Model 1905, 2 Colt Police Positive Special and 2 Colt Army Special springs (all DA .32-20s, btw) as-is. Heck, I don't even know if Wolff replacements are even available for those ~80-100 year old pistols, but I use them in SA mode almost exclusively, so ... <shrug>