I'm looking for a pocket gun/backup gun. I've been looking at mostly micro 380s and 9mms, but I'm starting to think about maybe a .357 revolver. I've been looking at the S&W revolvers and it looks like the most concealable not including weight is the 640 (2" bbl, hammerless) - I don't think any of the ultralights would be much fun to practice with. Buds has it for $458 (http://www.budsgunshop.com/catalog/product_info.php/cPath/21_39_72/products_id/26276) - can anyone beat that price? Any problems with the 640? Any other suggestions? I looked at the p3at, but it looked and felt really cheap, and the pm9 has some bad stuff being said about it.