I bought this machine in July of 2017. I upgraded the gantry to cnc4newbies $200 system. I also upgraded the belts to 9mm wide Kevlar reinforced. Lastly, the stepper motors are 269 oz.
In total I have around $2,500 invested in this machine.
It runs flawlessly, and has zero issues. The spoiler board has taken a beaten, but I will replace it with a piece of MDF.
One aluminum (Cheap part from inventables, but not needed) rail which holds the spoil board through the middle is damaged from when I was building my stand. Again, it is still in 100% working order!
If interested, contact me with any questions.