Take a look at the a650. Its larger, has a swivel screen which would be helpful in bright light, has 6x zoom, image stabilization (which I couldn't do without) and takes AAs...
Your SD600 is a fairly nice camera. On today's market you should be able to get something with more features, versatility, and at least equal quality for less money. It would be helplful if you would post which kinds of photography you intend. The Canon S5 is a nice package for about $350.ngk20000..
I would use it to take family photos, vacation pics, beach, some sporting events. Indoor and beach most often. Just want to take good point and shoot pictures and be able to see the LCD very clearly. That has really been an aggravation for me, have those aging eyes..
Thanks for any help anyone can give...
Regarding aging eyes: The Canon S5 I recommended two posts back does have a fairly large LCD but the advantage of it's flip-and-twist capability make it even better for the aging body that accompanies the aging eyes..
A handful of of other cameras also have the "flip only" or the "flip-and-twist". It's like getting "cruise"on an automobile.....once you've had one you don't ever want to be withouth it..
Alot of people are also pleased with the Canon G9 and Sony H9, and both have a larger 3-inch LCD. However I believe the H9 is "flip" only and the G9 does not flip. Some state "tilt" instead of twist. Both cameras moderately priced, too. The G9 has the best image quality.ngk20000..
For bright conditions like a beach I would prefer an optical viewfinder. Unfortunately more and more of the new designs are going to either no viewfinder at all or an EVF..