I was seriously considering a NX100 or NX200 + 30mm (NX100 bodies are cheap on EBay!) But I really prefer shooting JPEG, and don't like the Samsung JPEG processing (way too much noise reduction!) The NX200 particularly looks excellent in RAW.
Paulo, I went to your photostream. There are some nice street shots there, but I cannot tell which ones are done with an NX camera. Are they all NX or a mixture?