Summary: The GR is about half the price of the x100s, and as soon as it's in your hands you know why. All the switches, dials, etc. feel as wobbly bits. Maybe some of you remember "disposable" cameras, and once you took a photo you had to spin that plastic dial with your thumb for the next frame. The front right dial of the camera, controlled by the index finger of your right hand, feels exactly like that: very "toy-like" or "juvenile" as does the jog dial.
Summary: I purchased this camera because I was looking for an everyday carry camera. It needed to be small, compact, with decent image quality. I was debating among three cameras: the Olympus EP-5 w/17mm 1.8, the Fuji X100s, and this one. In the end, I decided to go with the most compact camera, which is this one.
Summary: I bought this camera and had it with me nearly every day. Great to carry around, put in pocket and have a very solid camera to take everywhere. Very easy to use as well. Great image quality, that can't be beat for such a small size. It can be particularly excellent in situations impractical for others. It is silent, small, convenient, easy. However, the other day while shooting a wedding (a 3rd camera on me) the camera would not got to iso 100, only 400.