i will love the black kova, my mouse is starting to fail, it's an old logitech MX518 D': my parent's give it to me as a gift around 5 years ago, but now with the USD so crazy high I don't think they can gift me any mouse like that any time soon :'(
I have an iPhone 5, the 4" screen is awesome because it make's it portable, but I'll like to try a bigger screen, so I'll say that my favorite feature of this phone is the screen size (that resolution is.... well... stupid, but.. well.)