Finally focus on these two builds, wonder if anyone here possess either. I prefer the range 800 offers but reviews tend to bash it over its picture quality, I mostly use them for sight-seeing, maybe get-together. Any suggestion is much appreciated. I was considering SD600 formerly, how about this one?

I was looking at the two same cameras myself. I'll personally be going with the SD800 because there's much less noise in night shots at ISO400. I'll let you compare for yourself:

SD700:
http://www.dcresource.com/reviews/canon/po...ightshot400.jpg

SD800:
http://www.dcresource.com/reviews/canon/po...ightshot400.jpg

your links don't work