Got my X34 yesterday. First i was little skeptic about quality of this monitor, have been reading so many bad things about this. After i heard Asus wont release their 34" 100Hz monitor anytime soon, i decided to give this monitor a chance, even that it is most expensive computer part i have ever bought.
First impression was "Wow". Even thought i knew this is 21:9, but couldn't imagine it's this wide! One reason is that this monitor comes much closer to my eyes that my previous Asus ROG Swift, because stand is much deeper than Swift had.
Another Wow-effect game from IPS-panel, colors are so good and clear and wieving angles are so good compared to my old TN-panel. Lucky me, i got almost perfect panel, no color bending, works @ 100Hz without problems, not so much backlight bleeding i was expecting etc.
Build quality feels much better than i expected too, i can say this is made very well. It was also little surprise how well OC'd GTX 980 Ti (1430/2000) can run games on this high resolution, Star Wars Battlefront runs about 75-125 fps and with G-Sync it's silky smooth. So far im more than satisfied to this monitor!