Barbara, I have a Canon s230, which is the earlier, 3.2 megapixel version.
It's about the size of a cigarette pack, and just a bit too small for my
hands. It also has only a 2:1 zoom, but I see they've corrected that for
the s400 to 3:1. If you want something ultra-compact, it would be hard to
beat its features and durability; the list of improvements of the s400 over
the s230 is impressive! They carry them in CompUSA and Best Buy, so you
should probably 'test-drive' one for size before you decide.
I'm still a proponent of the Minolta s414 for the same reason as you:
Barb's impressive images taken with it. Not sure how much of that is the