Honestly first manufacturer to release a 34" UW that is 3840 x 1600 (UW-QHD+) gets my money. 3440x1440 is same low pixel density as 27" 2560x1440. 122ppi vs 108ppi would be a nice little bump and not really require higher scaling in windows, but give comfortably more real estate.
The 34-inch QD-OLED monitor from Alienware is curved and sports a QHD resolution of 3440 by 1440 pixels. Thanks to another 20 percent markdown, the AW3424DWF has dropped back to its all-time low sale price at Dell's official online store.