I have the 710IS.. was an upgrade for us because I had lost our G2 (but later was found, long story..)
If you've ever had a Canon before, the function of it's pretty similar to what you're used to - I like the jog dial and how the menus are setup.
For me, it's more functional than the SD line (i like to mess with manual settings at some point), and smaller than the bigger ones (G line, and SLR cameras)... fits very nicely in the palm and is light. Rechargeable batteries to me is a definite +
I'm not a 'very serious' photographer, but I think it works great for P&S.. the zoom range (35-200) is very nice. I think the pictures look good and sharp.. I'll see if I can upload some pics online here also