According to samsung.com/us
website, the 60" PN60F5500 is Pentile:
Native Resolution: 1,920 x 1,080 (Black & White)
Resolution: 1080p Vertical
Meanwhile, the 60" PN60F5300 is not.
For 51" & 64", both F5500 and F5300 are not Pentile, according to their website.
Some news site said that US F5300 is the same as UK F5000, but in my country, Indonesia, the PS60F5000 is Pentile.
Confused? Me too..
You can clearly see this on the box, the pentile panels have "1080p Vertical" symbol on them.
To be safe though, I'll steer clear of all 60" Samsung Plasma...
I'm also questioning samsung practice of different panels technology in the same series, F5500..
IMHO, they should at least differentiate it more by assigning different series number..