2475 for all three IMHO. Lower input lag for gaming and whilst the black level isn't quite as good as on the 2408, PVA's exhibit black-crush when viewed head on (all very dark colours become black), so the black level on a *VA screen is a bit of a misnomer.
I've measured the HP as low as 0.1cd, e1d2, which I understand is very good for any LCD.
The only stat the dell wins on is contrast, the HP contrast is adequate and nothing more. Is this noticeable ? I would say yes, it is noticeable, but this brings me to picture 'quality'. Using the dell I frequently had the feeling that something was 'wrong'. Playing a rts with mist or rain effects, it looked as if the effects had been 'painted on', very hard to explain. Also semi-transparent menus and overlays on the dell just didn't look 'right', again very hard to explain. Where the dell failed big time was with scrolling landscapes, the VA contrast shift caused so much variation that I declared it unusable. The HP suffers from non of this, taking everything in its stride.
My apologies for the vague quoted opinions, they are the best I can offer.
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