I heard that theydid have problems with reds oversaturating and on the early ones blue flash syndrome. Haven't seen either on mine as of yet. My sis is going seeing a photo major and he says that they look good to him also. Form what I"ve read, just about any camera is going to have it's own quirks, some undersaturate, distort when zoomed. Canon and Sony are some of the better digicams out there. IMHO
I paid $625 at Sears back when it was still 1k everywhere else, because I got in with their online pricematch deal, not sure if that's still going on or not, I think you can find the 707 now for around 650-700 because it got superseded.
the F717 has a slightly faster shutter (1/2000 sec instead of 1/1000)
improved ISO up to 800 as opposed to 400
there are a couple other improvemnts I can't think of offhand.
It's actually just a new model, the 707 had been out for about a year when they intro'd the 717
here's some websites I go to a lot to see what hot or not
Imaging Resource
Steves Digicams
Digital Photography Review
also check out this camera
Sony DSC-V1 has the style of the Canon G1,G2, G3.