I and my wife have a Canon SD1000 (Ixus 70 in UK)
and we both find it easy to use, excellent results and very "pocketable". It has an optical viewfinder, although not brilliant, does the job. I have been most impressed with the large 2.5 inch screen which is viewable even in strong sunlight. Battery life is good, haven't run out mid shoot !
If you are thinking of buying one, seriously think of buying from the US, half the price over there !!! Good luck.