TJBC I got my G751JT CH1 from Amazon. Worked perfectly out of the box, and has been working perfectly since I got it (I got it in Novermber). The keyboard is a bit confusing specially the recording button where "esc" should be, won't lie about that, but I already got used to it. The true issue with this laptop is the sound. The current drivers are giving out some problems, but even after they fix it, I don't expect it to sound that good either. I've had another ROG unit the G75 in the past, and the audio wasn't the best either. They are somewhat decent enough as it is though, if you tweak the equalizer listening to music and playing a few games won't be anything painful. When the laptop I already knew I wouldn't be amazed with the sound, as I never was for any laptop (I use 7.1 headphones anyways).
For performance/price ratio you really won't find better (I'm running Far Cry 4 on my 970m at 1080p, ultra -just shadows on high- with an average of 60FPS). Specially for the $1500 G751JTCH1 which is the model I got. Also, if you are looking for lifespam, there is no better choice for sure; best cooling on any laptop out there. It is a very well-built, sturdy machine.
Some people were unfortunate to have problems out of the box, but I've owned 3 Asus computers in the past and never had any such issue.