The Good: Holds up to big drops. Huge back end. Looks clean.
The Bad: Flat Black gets dirty fast. The head tube was too big for my forks and i run a gyro which allowed my stem to barely grab on which somehow made the top of the steerer tube not a perfect circle. So make sure your steerer tube is atleast 160mm if you run a gyro.
The frame is holding up quite well. I like to do big drops and its holding up good. I've hit the frame a few times with grinding and still no dents which is super nice. The chainstay length is also great for mannying if your a bigger guy. It also has huge tire clearance (i run a Animal tww 2.2). I still have like a centimeter on each side and the back end fits super well too, no stretching involved and i run a nondrive side hubgaurd. The Flatback does get dirty fast but will look sick if you keep it clean.