That's an rebadged XArmor U9 / QPad MK-85. Definitely not the best (from experience, dodgy USB power, flickering LEDs). It's not metal-reinforced, like some more premium keyboards. Overall OK, if it wasn't for their bad LED and power management.
Dunno, but 'best' that would be, Das Keyboard, Cherry, Filco, WSAD(?), an old SteelSeries 6GV2, that kind of stuff. Really heavy duty, reinforced.
I have a Coolermaster TKL, it's cheap and actually not bad. Rigid (small size), and simple. Still don't trust the removable USB connector (just a basic, flimsy micro-USB port, 'secured' only by the cable routing). I do miss the audio / USB connectors from the MK-85, but it's a different usage (minimalist, versus large multimedia station).Edited by IlIkeJuice - 8/2/16 at 4:38am