Out of those that you had shown, the best one for what you need is the Canon S90, but it only has a 3x zoom. There is no point and shoot that does real well in low light but especially there isn't one that doesn't do anything other than poor in low light and has a large optical zoom.
Trying to spend less than $500 and nothing with a detachable lens. I have read other posts, but they seem to be outdated. What is a great camera for concerts? I will be taking pictures from within the crowd. Performs well in low light conditions and has good optical zoom w/ image stabilization.
Some cameras I've been looking at:
Canon G11 or G10
Canon A650
Sony WX1
Canon Powershot S90
Nikon L110 (currently have a Nikon I don't like)
Canon SX20is
Are any of these recommended and are there any others that I should consider. Thank you!

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