I've always liked canon best, but i think nowadays the differences are probably less dramatic than when i got my first one bunch of years ago (it's still going strong too and still takes great pictures).
There are only two things I don't like about my current canon (sd750-is), (1) you have to go to a menu to toggle the light metering and (2) the battery tells you to change it only when it's about to die and you have at most a couple of shots.