I got into the X in 2011, when Fuji announced their X-10. Excellent build and image quality and I loved (and still love) the Retro look.
When shooting in black and white and high ISO from 800 - 3.200, you get wonderful "film" grain. Auto Focus is quick and accurate with good exposures and dynamic range.
X-10 is great for the streets, because of the smaller sensor you get a large depth of field when shooting f8. All in black it is inconspicuous. X-10 also has the "Q" button, the RAW knob, which gives quick access to all settings.
Fuji X-10 - a classic.