Sorry... I'd answer if I knew the answer. MrsD is the authority here on EFA's, but she's on vacation. She checks in occassionally when she can find computer access. Meanwhile... maybe you will find this helpful?
http://neurotalk.psychcentral.com/showthread.php?t=6092

I'm quite sure Barleans is a reputable brand name, but don't really know anything about the formulations...

I did use Barleans Flaxseed oil for a time... but that is neither here nor there.