Don't know if you arestill choosing, but... Having owned SD200, I highly recommend it. Sure it's bigger than SD20 (smallest from the list) , but not by much. And it has 3X optical zoom, wheras 20 only has digital. It doesn't take the best pics out of the bunch either, but it's "more" than adequate, etc... What I am trying to say is, for thetypical HSer, SD200 would be the best fit from the list of camera that you suggested. And it's stylish (better than Sd20 IMHO) to boot.
Ididn't experience any problem w/ the LCD either. And the camera wasn't treated that gently