I wouldn't worry about IPS glow unless it's extreme. I've had plenty of IPS screens. Some had pretty bad glow, but it all was meaningless because it was pretty much impossible to see unless I literally looked for it, in a pitch black room and a dark background. And even then, it didn't bother me that much. Only 1 or 2 IPS screens I've seen had disturbing IPS glow, that made me feel uncomfortable. What you see on photos is highly exaggerated by a camera; eyes don't see it like that.
BLB is a much bigger problem and much easier to spot, but it's not something that every 27inch screen, even as terrible in QC as Acer's monitors, is plagued with.
On the other hand, TN is inherently flawed in a way that makes it highly unpleasant to use in almost every situation, even the 8-bit ones, albeit those aren't as bad as 6-bit TN panels, which are just plainly disgusting. No offense to their owners.
That being said, I'd stay away from everything AU Optronics (or, using their more common name, Acer - it's the same company after all) produces. Their products are innovative, but overpriced and terrible in terms of quality control. Panel lottery for something that expensive seems like a sad joke to me.
