I've heard great things about the 700. I will be getting one soon. I used the on-board flash on my 600 a lot on vacation in Jamaica and Bahamas on the beach, and the flash seemed to work for me pretty good, except when it was pretty bright out, the flash seemed to over-expose the subject every time, so it was always dialed down. I think it will work if the subject is fairly close. If it's far away in bright sun, won't do much... but around 10 feet or close, I think it's better than nothing.