Your criteria of how you would determine "better" is not in your post. Some will define lower light performance, others will blast a camera off the list because the LCD colors are not that great.
Got a list?
I have used some digital cameras as an amateur and now I want to use something more advanced. I am planning to buy a canon for max $400, however I couldn't decide which one is better: S1 IS or A95 (this is a new model but at least someone who got 75-80 can help me to compare)...