Get the 6906. If you really want a bobbed hammer, it's still not hard to find a spur hammer off any of the 3rd gen S&Ws and just swap it out. You'll need to swap the hammer struts, but the pin drives out and can be reused.

Personally, I thought I'd dislike the bobbed hammer but it's really not an issue. On the range, it's cocked after you cycle the slide to chamber the round, so you really don't use the spur, and in a self defense situation you're going to shoot it DA anyway.

There are some 6906s showing up as police trade ins in very good to excellent condition. I got this one recently for $299 out the door. I also scored pair of magazines for $20 each.

I liked it so much I added Meprolite night sights. It'll hold the 10 ring on a B-27 target at 15 yards, and it's become one of my primary self defense pistols.