I don't have an iPhone 6, but if I end up getting one at some point, I'll probably go with gold. It's funny because silver was initially my favorite and I couldn't stand the gold...but for some reason, I seem to be liking that one more and more.
My boyfriend got an iPhone in December because he was switching from an ancient flip phone and a plan with his parents on Verizon to my T-Mobile plan with me, my mom and my best friend... He didn't get a 6 but ordered a 5S from eBay. He thought he was getting the space grey but actually received a silver one. He was contemplating returning it but ended up keeping it even though he doesn't care for the color.