I converted my 97B to SAO as soon as i received it so that it would function identically to my 75B SA. I did the same thing to my P-01 Compact when I received it.
I prefer SAO to DA/SA. I like every trigger pull to be the same pull, from the same distance. If there were a way to easily convert my SIG P229 to SAO (not DA Kellerman), I'd do it to that one also.
If you go the SAO route, I can provide you with a list of the parts I ordered.