I think you're mistaking the iPhone 6 for the iPhone 27S.
What's that even supposed to mean?
OP: get silver.
I don't think scratching will an issue with iPhone 6(+), with any color. Remember, iPhone 5 used to scratch the most on the chamfered edges, and they aren't there anymore.
will silver show less scratches?
ok cool my 5 is pretty scratched up on edges. I'd prefer space gray.