What Rogue said,The only difference is the grip width.Like everyone says,the 3913 is the best 9mm for conceal but,6906 is just alittle wider in the grip.
I was carrying it last night in sweatpants with a IWB holster and I hardly noticed it.
The 4513 is pretty awesome too for conceal.I don't hear too many people talk about this one. It's only 6 shots but it's compact.Maybe it's just like the Cheif Special 45.
I have a sig 220 compact and it's almost identical dimensions.
The 3rd gen Smiths are really great.Sigs are also good and to me are very similar to 3G Smiths ,But they are pricey.
For Sig compact,I have that 220 compact and a p239 9mm.
To me they do the same job but just feel different.
Thanks for looking guys.I've been looking at this site for awhile.It helped me make up my mind about picking up these S&W. I don't care much for the new poly guns.And if I do ,they're a dime a dozen.These aren't.
I don't think any one but sig and some berettas and 9xx series tauruses are going to have alloy frames for now.
I'm also a lefty,so ambi controls are a must.
Rich