I'm super curious about the potential wear of the space grey/gold colours too. I've heard that space grey shows up scratches more easily and can wear in the palm rest area from rubbing.I'm holding out for a 16", but will go silver. My understanding is that the space gray/gold/etc are all coatings that could wear away, while silver is basically close to the raw aluminum and could hold up better.
If I'm wrong about this though someone please let me know since I might go space gray instead in that case.
Would love for someone who has personal experience to give us a head up