I have owned both balls and have been more impressed with the Frenzy over the Threat. The Frenzy, as mentioned in an earlier post, does start up a little sooner but the ball is very continuous. Simply there is no quit in the ball. My Threat just did not have that driving finish that I was hoping for. It started a little later, and turned maybe a little sharper but simply did not continue through the pins like the Frenzy. My choice would be the Frenzy...
But, I also have owned a Zone X Low Diff, which I really love. The closest thing to giving me the same reaction to it has been a Morich Pioneer with Mo's control drilling. The Pioneer gave me great length and a very readable break point and excellent carry. Just thought I would throw in another contender for you to consider.
Scott