I have an artist's eye, mainly down to the fact that I worked in the games industry as an artist/programmer/designer for 26 years... so I am really picky over monitor quality.
I bought two Dell U2312HMs that had terrible IPS glow, so they went back the following day.
Then I bought two EA231WMIs off EBay, that were supposed to be in "As new condition", with "brand new" vesa stands. But they had image retention spots on them, and one of the stands was clearly old and used.
So I thought sod it, I'll just replace the faulty NEC 20WGX2 Pro that I have got (I have a matched pair), with a working version. Bought one of those, and that had massive image burn, in the same area as my faulty one... so that went back too.
I tend to spot things that other people don't see, or it doesn't bother them... a downside of the profession unfortunately. I just love these NEC monitors, they're just so hard to beat for quality... for me anyway.
I've read some positive things about that Benq, so it could be a good choice... especially for gaming. I don't game any more, so my only requirements are excellent colour reproduction and consistency, which means an IPS screen is a must. I like glossy screens though, and they're proving hard to find, in a vesa mount monitor, at the size I want.