My iPhone 5S was white/silver as is my iPhone 6 Plus and iPad Air. Personally I think the gold one doesn't look great and I've stuck with the White/silver for the iPad 2 to match my iPhone 6 Plus.
I don't think the Gold looks good on the iPhone 6 or 6 Plus with the lines on the back. However, I do think the Gold looks much better on the iPad Air 2.
Silver. Much easier to find it at night when the lights are down.
I can't believe people are still buying a boring black iPad. I mean really.
I buy the black version of anything, for me it just looks better against all my other devices.
Gold. The only color appropriate for this awesome ipad mini 3.