Go for the wideangle for your uses, maybe hang on until the Panasonic LX3 is released as that has a fast lens which will be ideal for you - though in mentioning low light and shutter lag you have highlighted the two areas where any P&S will be mediocre and where dSLRs excel..
I just bought the sd790 2 weeks ago and decided on it over the 870 due to what I judged to be better IQ in sample pics from various users. I spent a week taking a few hundred pics with it and I was very impressed. My daughter is due home from vacation with the camera late tomorrow night and I'll post a few pictures then. Both cameras imo are stylish...
In available light the SD870 wins on speed. Dunno about flash recycle time..
Great feedback, thanks.I welcome more as well of course...
I called Canon and they said the flash recycle would be the same...
I got my hands on a 750 (of course) a 870is and also an 1100is..
I realized how much different the size is and how important ultra-compact is in my decision, and am reconsidering the 770is, and perhaps the 1100is..
The 770is is basically a cooler 750, though I haven't found one in person. It would be nice to get all 4 including the 790is in hand..
Part of the size consideration is due to backpacking, which is one cool point for an OVF and a smaller LCD/camera, though i'm 50/50 in the larger LCD dept..
Any feedback on the 770is and 1100is in the low-light/ shudder lag/ video?.
Would you rather have a larger LCD or OVF?.
Virtual shopping woes. ..
If your hiking takes the form of a week long trek, then the OVF has a real advantage. As you can leave the LCD turned off and save on battery drain. But this will not be a factor in a day hike..
As for the LCD, in my view the performance (or quality) is more important than the size. It needs to have a brightness boost feature (usually timed to be a few seconds) to deal with daylight outdoors. Also helps if it has a wide viewing angle. Unfortunately the reviews don't try to measure this stuff. But at least side-by-side in the store you get a chance to see which are brighter..
I got the sd870is. This P&S is very quick. For landscape shots the wide angle makes a big difference in the shot!.
Thanks for all the feedback...