I totally disagree with your statment there mate.
The Dell has less connectivity and is more expensive.
I would personally say the HP is better connected, good at everything and is cheaper - BUT the Dell (if you get a good panel that doesnt suffer pink / green issues) is a good panel and is a newer technology.
I have been looking into this for a long time now and I was almost set on the U2410 - but now I discovered the pink / green issue and am totally back to square one.
The only thing putting me off the HP is that it is old and seems to be phasing out. There is also a newer HP to consider, the cheaper ZR240 (or something like that) but they are hard to find anywhere!!