after struggling with the safeties on my Tanfoglio Stock II and finally getting a Shadow, I then discovered the flush safeties while in Czech. For me that was the "moment", I hate manual safeties on pistols, hate, hate hate them. I hate grip safeties even more. At least on the 1911 I can get a proper grip and thumb placement on the safeties, whereas on my CZ or Tan, no dice. No matter what I did I'd end up engaging the safety while shooting, my thumb could not override my grip pushing up. With the flush safeties I don't have to worry about it.
As for mag disconnects, I know of 3 people who were either seriously injured or died as a result of not being able to fire their pistol when the mag came out, one was a pretty highly publicized case of a female RCMP member in her car. I don't recall the whole thing right now, but the general feeling was if she could have gotten even that one shot off, she might have survived. I am certainly no expert on carry pistols and their use, but I'd never carry one with a mag safety if I was given a choice.