I placed an order for the Nighthawk X8 yesterday after searching for a Brown MX keyboard with backlit.
There are a few members on the forum who seem to have the keyboard and is having good feedback for it. Hopefully one of them can pitch in and give more details. The reviews on Amazon for the keyboard seem to be pretty good also.
I did mail Jerry from Max keyboards on how Nighthawk X8 is different from the XArmor U9BL and got a prompt reply with the following information.
Here I will take the opportunity to write out the comparison for you:
Xarmor U9BL - (No) onboard memory, (No) software, (No) braided cables, (No) resistor on all leds, (No) full usb nkey roller, 2 usb cables instead.
Max Keyboard - Onboard memory (yes), Software to program macro (yes), braided cables (yes), resistor on all leds (yes), USB full nkey roller (yes), memory form wrist pad (yes), only 1 USB to power everything, customize Leds (yes)
Ps: Xarmor uses green color Printed circuit board, Max Keyboard uses red color Printed circuit board (double layer)
* You can clearly see it is not a re-brand, Only the enclosure looks identical. All internal parts and features are way too different from XArmor.
Hope that helps.