In terms of design, this controller is the best in the market. The shape makes it really comfortable on your hands and your fingers sit nicely on top of the triggers. The D-pad is a huge improvement on the old 360 controllers. You've got bluetooth capabilities, a headphone jack, and a microusb port for wired use.
Now for the bad. The microusb port is a joke. It is very loose and constantly falls off so it's practically worthless. This particular controller had a coil whine and according to reviews, that's "normal". I returned it and got another one where it had no noise.
This is an issue with Amazon itself where the box looks old and used (corners dented). I assume they have a whole stack in their warehouse crushed together or something.