Here is a recommendation...try out the new Canon PowerShot SD4000IS. I know your biggest problem is low light situation, but you still want an easy point and shoot camera to use. Since you are familiar with Canon, you'll love this camera. What makes this Canon SD different from all the other Canon SD before is that this is the first Canon SD that uses a back-lit CMOS chip (same chip used in typical Hi-Def camcorders) which is great for low light situation. Also, you can shoot 720P video and it has optical zoom in video mode.
Here is a review:
Canon Powershot-Sd4000-Is Review: Overview
Here is another review:
Canon PowerShot SD4000 IS Review: No More Noisy Nights
Also, if you have Costco membership, you can get the Canon SD4000 in Red, Silver, or Black at Costco.com (online). Yes, it may be $340 which may be higher than other online places, but you can return it Costco with no questions asked within 90 days if you are not happy with the camera.
You can also check out Amazon.com
P.S. I also have the same camera and have been impressed with ease of use and decent low light and night time pics with it.