VW224U. An updated VW222U? Any info or reviews

Monitor searching at the moment and have settled on the VW222U for my 22 inch monitor.
Though in my search I have come across what seems to be an updated VW222U, the VW224U. The only difference I've noticed is the claimed contrast ratio has increased from 2000:1 to 5000:1.

I have read many very positive reviews on the VW222U and was wandering if anyone knows if the VW224U is in fact an upgrade, or as per usual the DCR is just marketing wish wash. The monitors look identical though and the price difference is only $10(Australian).
http://www.centrecom.com.au under montors.
(Online component store showing different models)

If anyone can provide some information on this montior or advice (should i play it safe and just buy the VW222U?) I'd really appreciate it.
Cheers