My CW40 was one of the most accurate pistols I ever owned, and like most CW's, was also one of the most reliable. However, I prefer the 45 ACP round, so when I bought a CW45, I sold the 40. They are almost the same size.
Just got back from the range. I also have a HK P30 in 40, live that gun very much. Needless to say, I love this litltle pistol. I got 300 rounds through it, no issue with it being too "snappy" or anything like that. I am attached to 40 S&W ammo, love shooting it. I got rid of my M&P45, and my Springfield 1911. The Kahr performed as it should, no issues. The sights were a little different than I am used to, but got that dialed down as well. Nothing like a little range time to get more acquainted with the new EDC.