For those interested, it doesn't suffice to find one manufactured in November 2007 to get a Samsung S-PVA panel. I learnt it the hard way with 3 purchases. ;)
S/N: QY807450xxxx --> Samsung S-PVA
S/N: QY807480xxxx -> TN crap (even though it says November 2007 on the box)
December 2007 and...