So I have been using my X34 for about a week so far, everything but 1 thing which I am fine with is perfect with the monitor
No Dead pixels, Minor BLB (See TFTCentral backlight bleed image, mine is the exact same), no scan lines (yes I have looked in Gsync demo and other games), no colour banding (OCUK have V2 firmware installed), sleeps fine, settings do not reset. Only fault if you call this a fault is that it only reaches 95hz overclock and I am not annoyed it doesn't hit 100hz, it isn't advertised as a true 100hz panel, everywhere it is being sold as a 60hz panel with overclocking support.
I am very happy with the monitor and reading through this thread makes out as if 9/10 panels is next to broken, people who do not have problems with the monitor don't have anywhere near the same incentive as those who have broken panels, as well as being told that anyone who doesn't have these problems are lying which is a joke to read.
Another story, friend bought a MG279Q AKA lottery monitor and its perfect, not a single problem and I know a guy online who bought the G-Sync variant also perfect. Niether of them go on the internet to praise Asus for a working panel, it should work out the box so why bother.