I have DNA and like the pop a lot. My brother in law has the BIO core (identicle board other than that). Have not had the opportunity to ride one then immediately ride the other to see the difference. When I do, I'll let you know.
I have heard that the DNA has a little better pop though. Cant confirm yet.
On a related note: have you demo'd the board yet? Parks is a hard board to ride, the pop is somewhat less predicable than other boards, and the list of disadvantages goes on. Personally, I found the trade off to be beneficial for ME but it varies with riders.