No one can make that decision for you.
However, it sounds like you can't decide. That tells me that at this moment you like both boards, but feel the need to decide on one.
Why?
Flip a coin, heads is the Das, tails is the Unicomp. Run that board for a week.
Seriously, one whole week. Put the other keyboard in the closet, and forget about it.
Then switch to the other board, run that one for a whole week.
You will then be in a better position to make a decision.
Trust me, I have been there, I know what its like.