Good God... are you running your LCD in anything other than native resolution when playing a game? You don't scale anyway, don't you think?
Signal might goes through some extra circuits but if anyone claims they see the difference that's complete and utter BS especially in the craptastic, often capped but always inherently broken console gaming.
I'd wager a very serious bet that I'll beat their @sses in any FPS on either U2410 or U2711 while they are using ZR30W.
BTW let me know how BIOS works on these HP's, I never tried to tweak my BIOS on a single monitor with no scaler...