Kahr makes very good carry pieces.
I'm a huge Sig fan, but am completely unimpressed with the P290. Personally I think the Ruger LC9 offers a better, more concealable subcomp 9mm for about $250-300 less than the Sig. And as a Sig fan, I really would like to like the P290.
Buy the Kahr. Or the Ruger. Save your Sig money for a larger framed alloy service pistol.
Just one dude's opinion.