I was facing the same question awhile back. I looked really hard at the P6 SIG. The price back then was good. The gun felt good but the grip seemed wide and a tad long for CCW. Maybe that's my being anal or something, but I didn't feel I could conceal it in the hot Texas spring/summer/fall. I probably could have made it work for most of my needs, however I was also put off by the availability and cost of extra magazines.
I had shot a buddy's S&W 908S, the stainless "economy" version of the 3913. I was conversant with the original Mdl 39 and had always liked them. I hunted around and without much trouble I found a 908 at one of the Houston gun shows (don't remember if it was at Reliant or the GRB) nice older gentleman, older than me anyway and less less cranky, who selling his 908 for his daughter. we talked turkey and I took the Smith home. It was LNIB, came with all the stuff it needed, including the waxed paper and spent cartridge hull. It shoots and handles like a dream. So smitten am I with it I sold of my Glock 26 and am looking for a 6904/06 double stack to go with it.