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hardly anyone has an Eizo, so you probably won't be getting much personal experience...

the SX has an H-IPS panel, the other two are S-PVA. S-PVA, compared to S- or H-IPS, tends to have slower response, more contrast, and more pronounced color/contrast shift.

which one to get depends on what you intend to use it for.
 
I have yet to come across a bad Eizo screen, and have used several generations of ColorEdge models. I'd buy the SX model out of the ones you listed though.
 
While Eizo screens are excellent. I find the better priced NEC Spectraviews as good and in certain regards a bit better.

Sorry, I know that wasn't your question but I thought it still may be helpful.
 
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