I would say 29" UW is just not tall enough, but 34" UW vs 27" 16:9 looks miles better to me, I would not mind getting a 32-40" 16:9 screen, I would not go back to a 27" though. I would say 34-35" UW is a great size for a monitor, but the contrast on IPS screens is lacking compared to my TV for example. I would like to upgrade to a VA or FALD VA monitor for the better contrast and HDR support, but there is nothing around currently. I think when they start releasing TV's with 120hz 4k adaptive sync, there will not be much point in getting a monitor anymore, just get a TV instead, but also Nvidia would need to support adaptive sync.
here is a 27" 16:9 vs a 34" 21:9 :
Or a 32" 16:9 vs 34" 21:9... the 32" would not be such a downgrade as a 27"
here is a 27" 16:9 vs a 34" 21:9 :
![27-inch-16x9-vs-34-inch-21x9.png](http://www.displaywars.com/comparisons/27-inch-16x9-vs-34-inch-21x9.png)
Or a 32" 16:9 vs 34" 21:9... the 32" would not be such a downgrade as a 27"
![32-inch-16x9-vs-34-inch-21x9.png](http://www.displaywars.com/comparisons/32-inch-16x9-vs-34-inch-21x9.png)