Would this be a good choice as a compliment to my Rebel XSi?

I have a Canon EOS Rebel XSI (450D). I am looking for another camera that I can always carry around in my pocket, to take photos when I don't want to lug around my SLR.

I like the price of this SD1100 IS. Is there any other camera I should be considering? I only need ~6 MP (anything more is rather a waste, but they all seem to be higher now-a-days). I think one of my largest criteria is actually size. I do literally want this to fit in my pocket. I would also enjoy a camera that can take good photos in low light, so good quality at high ISO would be great. I think some sort of image stabilization is a minimum for me.

I have used digitalcamera-hq.com as my reference for years, there are just so many options in the ultra-compact category now that I find it difficult to wade through the choices. Thanks for the input.

Besides SD1100 IS, there are many other cameras you can look at and DCHQ makes it simple by classifying the cameras by camera type, by popularity, by price range, by megapixels or by brand.

I find dSLR users tend to ask for something close to dSLR, such as manual controls, high power zoom, image stabilization, high ISOs etc and yet can be slipped into the pocket.

If this is the case for you, the list can be quite short.

Because opinions vary, sometimes even to the extend to be biased, the more you ask around, the more confused you will get.
So, with the help of DCHQ classified pages on cameras, go straight for what you want and the choice becomes less confusing.

Most professionals who use Canon, usually pick up a G9 as their pocket or backup camera. High MP, large chips, good zoom. Nearly DSLR quality. Manual controls. Compact. Good choice.

Ok, fair enough. Maybe I can narrow my question down a bit.

Which ultra compact is going to take the best quality photos at high ISO. That is my main criteria.

I agree with Bukit here. The problem is that people are falling for the more MP is better myth and camera companies continue to ignore basic math and stuff these tiny chips more and more MP, making them less sensitive to light, not more. At least the G9 and G10 have increased the size of the chips to address the issue (although the G10 is stuffing again).