Personally, I'm in no rush... I'm moving house soon and will be renovating a place, so by the time I'm ready to buy, the Asus may be available, and I would ideally like to see reviews of it before I pull the trigger either way, but if it's too expensive it would be an easy decision.
Lets say, you did not have to renovate your house and was waiting for the monitor, would you still wait for the ASUS PG348Q or would you just buy the ACER Predator X34
Sorry for these questions, I just do not know if I should wait for the ASUS PG348Q