I own a Kahr K9 and a S&W 6906. Though they are both 9mm, I can't say that I'd put them in the same class. The 6906 is significantly bigger than the K9. Side by side (and on your hip), it's really noticeable.
Now the 3913/3914/908 is another story. Though they are the same height and length as a 6906, the 39XXs are much more concealable.
As far shootability goes, I have to give the nod to the Kahr. The DAO trigger is short and smooth on the K9. It is one of the easiest small guns to shoot fast. I actually won the stock service pistol class at a local IDPA match with my K9.
It all comes down to which one feels the best to you and which one you shoot better. Reliability/value wise, it's a tie between the two.
[This message has been edited by DMSC (edited March 17, 2000).]