My Moto X! It's vibrant and almost gaudy, just like I want it. :) I wanted a purple back, but none of the options looked good with a colored trim, so I reversed it and went with a purple trim instead.
I'd want something interesting- a nice basic pattern that looks vaguely floral, but also geometric enough that it's not *too* off-putting for manly-men! I was interested in making a stylized bellflower- they're beautifully simple and I thought they'd look great as a pattern!