Posted this on another forum too and am looking for responses. I've been a 9mm user for several years and recently bought a 40 cal since most LEA has now adopted this round. However, after only having my S&W SD 40 VE for a week, it had to go in for repair or replacement. I don't know if I'm turned off by the bad experience or if I'm over reacting. I enjoyed shooting it, and I don't have a problem handling the larger round. But I'm thinking of trading it in when I get it back and getting the M&P 9. I've been reading a lot of 9 vs 40 threads on the net and opinions are all over the place. Would like to hear others thoughts and if anyone has decided to return to the 9 only, instead of maintaining both calibers. Thanks.