coral ID

[Starry]

Can anyone ID these corals and tell me if they are in fact the same species? I bought them from 2 different places, but they look similar.
http://www.canreef.com/photopost/data/500/medium/DSC00134.JPG
and
http://www.canreef.com/photopost/data/500/medium/DSC00108.JPG

I am thinking both acro. Nana?
One I started as a wee little frag, the other I picked up about a month ago. One has green polyps, the other has white.

[Starry]

no acro experts wanna take a stab at this? Greg? :)

[Snappy]

My opinion is both pieces appear to be varieties of Acropora Valida. That said A.nana is a good guess because they have a lot of similarities.