The units I was able to demo had no glare or reflection that I was able to determine and this was a fairly well lit environment so that would have been an issue had they not been. Glossy is maybe not the right term. Maybe "pop or three dimensionality" that the Dell series I have used lacks. Plus the PLS technology seems every bit as good as IPS in viewing angles and color accuracy. The color never changes or shifts no matter where you are standing in front of these. Both monitors were calibrated with a Colormunki and the brightness was set correctly to my eyes (below 90-100). We'll be back at that client site in a few weeks, and I will run them through some more tests. Had I know about these when I got my U3011/U2711 I would have given them serious consideration.
Folks are always mentioning Dell, HP, Eizo, NEC, Apple, etc.. as capable photo editing and color accurate monitors but you never read about these particular Samsung monitors being as good as they appeared to me. It's hard even finding a review.