i just did something similar with mine (Big Beulah 2) where I had half the original phenolic tip taken down and used as a pad and put a Samsara break tip on it and now it ranks right up there with any BK2 or Sledgehammer I have ever used. Im actually having a little trouble controlling my break speed right now because its so much stronger. And I absolutely LOVE the wrap on the BB2's. The little extra bit of cushion with the memory foam underneath the rubber grip is very easy on the arm.
That being said, I think the stock BB2 leaves a little something to be desired. I was in the market for a new break until I converted that phenolic tip to a pad and added the Samsara.