The 43C and 317 aren't as much alike as you might think.

I owned two 317s, snubbie and kit gun, and now have a 43C. The big difference between 43C and the 317 is the trigger. I don't know why, but the DA trigger pull on the 43C is so much smoother and feels lighter. S&W must have changed something to compensate for the fact that the 43C is DAO.

If you like to cock the hammer everytime get the 317, but if you like to squeeze 'em off, get the 43C.