I fail to understand how people can have a preference for that POS but fair enough lol, yeah if you wanna get anal and have to have an IPS screen the Dell Ultrasharp is ~$1k, but the other $2k or so would build a fairly kick arse rig.
I do like the screens in them over the Ultrasharps though, I think it's because the glass is glossy.
Not a fan of the all in one form factor, mainly because when something dies it's a huge production, can't upgrade much etc, heating etc etc.