If you are doing it for aesthetics then choose what you like the look of best, not anyone else. I have the gunmetal one cause thats my preference. I do agree with the white ones looking slightly cheap, especially when people dont follow a strict color scheme with their hardware. Just a note though, I had blue lights in my gunmetal, and it didnt look great. I use white lights and everything in my case has a gunmetal/gold color to it. I think should you want coloured lights stick with black or white, or the color of those lights.