concert photography, which p&s with good zoom?

so I've had bad luck lately with trying to bring in my m4/3 gear in any arena/theater.   "No interchangeable lens' seems to be the rule where I live most of the time.   I had success before with bring in smaller m43 cameras (GF1) and a lens in my wife's purse, and then assemble it inside.  However, lately, its been more strict everywhere.   Which I don't understand why, most people's phones are capable of taking decent pictures these days, why fight what is inevitable???   99.99% people take photos for their personal use.  In any case, my last point-and-shoot that I've used to take concert photos was Sony HX9v...  I sold it since because I was not using it.    The quality was just passing, but the details are smudged nevertheless....  some examples were

I see the current Sony replacement model is HX20v....is it any better than HX9v above???  I used to like Fujis years ago in point-and-shoots, but I am reading their new zooms AF is slow in low light.  My wife has Panasonic ZS20, and that thing takes forever to af in low light, it will fail for sure.   Requirements are:   long zoom (so Sony RX100, Sony S110 etc are out), small size (so bridge cams are out), quick af, manual controls (PASM or at least ability to set slowest Shutter Speed), decent low light noise...   What else should I look at?

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