well my BenQ EW2420 arrived, out of the box it doesn't look like anything special, but the first thing that smacked me in the face were the BLACKS, they are truely jet black. Factory settings are way over the top, needed to reduce both brightness & contrast. I downloaded a few 1080p trailers from the Apple website and they looked beautiful, no other word for it. You can't compare this panel to a TN, it's in a different league. As for gaming, can't say yet, need to install Windows 7 on to a new HD, then install my games. In the one hour I have owned this monitor ... I love it!
You could test them out individually and can return them for any reason, under DSR, within a week. It complicates your job that you are considering three screens purchased at the same time, though. I would be wary of inter-panel variation as mentioned here.
Such a thing exists as a "cheap colorimeter"?If you do find you struggle to get things the same on all three screens I would certainly advise a 'cheap' colorimeter to try to get things more consistent. You will probably find the colour temperature different on the P2450Hs too but you are less likely to find any major problems like screen ripples and the like. I would go for three EW2420s myself, especially if you like the VW2420H, but I'm a bit of a gambler.
It's a bit complex I know .
Datalol-jack mentioned he was ordering a large batch of BL2400PT, you could probably gauge how likely you are to get a bad unit depending on what he receives.not sure we've seen a big enough sample of screens purchased to get a full view.