Thanks Brian - good suggestion.
It looks like the trade-off/differences are: a 6x optical zoom,image stabilization, and 7.1 megapixels or a 4x optical zoom, no stabilization, and 10 megapixels. The 710 is a few grams lighter as well.
Between these two then, is the OIS and additional 2x worth trading 3 megapix? I'll look into that.
Thanks again