I've been leaning towards the canon sd series, but am unsure. My dilemma is that I find at times that I wish I had a stronger zoom. I use this camera often on hiking trips, and there are times when I spot a bird or creature that is far off, and don't have a good means of getting closer. I don't know if I can compensate for this with a larger resolution camera (and enlarging the photo via software).
My second concern is sometimes I need to take shots quickly, and miss them because the camera is slow to start/take shots w/out prefocus (shutter lag?). I often turn the camera off to conserve battery life (though I suppose constant turning it on and off may not help much either...).
The things I do enjoy about my current camera and would like to have in a newer camera:
ruggedness (It goes in my pocket on hikes. Once recently I dropped it on concrete in a parking lot - stupid sunscreen, and it doesn't seem affected that I can tell. Phew!)
low light shots (We're often out at dusk/night. I have discovered that often shots are better when I don't use flash! Actually to my surprise, they often turn out pretty well. A plus b/c I'm always trying to conserve the battery)
Video. (I do enjoy video with sound, wish the quality was a bit better, though.)
Compactness (It seems larger than current compacts, but I love that I can keep it handy in a pocket)
I do enjoy playing with the settings on the camera (when I remember to charge my backup battery). I find that I can get through most of a day when I keep the lcd off and keep flash use to a minimum. I would probably play more with the settings if I weren't so concerned about battery life (but I would be then using the lcd more to check my shots)
I may want to sometimes print and frame shots (of family events or nature/trips), but more often I think I will keep them in digital form (on cd or on the web).
My last concern is that I'm cursed when it comes to choosing electronic products. Somehow I always seem to find the bad of the bunch or ones with class action lawsuits (really!). Fortunately I got my s300 as a gift.

-s