I was one of the unlucky few to receive my new MBP with a scratch right out of the box. I am so relieved I chose silver because you really can barely notice the scratch. (have to really look for it in the right light at the right angle). The photos of the SG MBP's with similar scratches from the factory look much more pronounced and noticeable. With that said though, Space grey looks great but Silver makes me happy
I have a phobia of scratches on this thing so I bought the I-Blason hard case to protect the exterior. Great case. Thin, soft matte feel and fits perfectly.