I would say mrk's is now the same as mine, except I'm a bit of bleed in the top right.
I reckon if I sent mine back it would come back worse.
What monitors have you guys bought where there has been no bleed on an LED screen, I've personally always had BLB issues with LED and the monitors I've had with no issues at all have been regular LCD screens like the HP LP2475w.
I'm guessing the main issue is whether a company should be hand checking their products in the test stage, however I've had plenty of Dell high-end screens with BLB issues so I'm not sure a Dell offering would fix the issue?