I have all of them the dirty bomb is way longer and snappier in the backend, my solid uranium is much smoother with a nice arc the whole lane very easy to adjust off the move. My pearl carbide is earlier than the solid uranium and bleeds off energy much quicker the SU and just does not have the pop like the Su does. When you come out in january to vegas with andrew i can meet all of you and let you throw the dirty bomb and uranium solid if you did not buy them yet. MY money would say pickup a uranium or uranium solid over a dirty bomb but the lane gurus will try to sell you on the newest greatest plus i know were there are new carbides in stock here in vegas if you would like another pearl carbide.