i have both the Dell U2412 and this monitor (got it for 260 AR last black fri). This Asus has hdmi input as well while the Dell doesn't have. Both are excellent in terms of quality but if I had known, I would have gotten 2 Asus. This monitor comes with all the input cables as well and well packed.
I've owner both as well. Currently have one PA248Q on my desk. Great monitor and the USB 3.0 hub is a handy little feature.
Definitely recommend this at $260!