Well, most of you will know I'm mainly an Ebonite fan, although
I have dabbled in other makes (esp Storm and now Hammer) too, with
the exception of Brunswick. Just a teeny bit of Columbia and
Track.
Have tried many from Ebonite, be it Gemstone, Optyx, Matrix,
Savage, Vortex., Apex or whatever, but the best balls from their
line that worked for me were the black/silver Matrix Trimax, and of
course, my ever present reliable Clear Werewolf.
However, the ball that actually worked best for me overall is the
original Trauma from Storm. Gave me my high game, high series for
over 3 gms, 4 gms and 10 gms. I'll have to give that my best ball
used award.
Now gonna try even more of Storm and Hammer. 
I like what I've seen so far.
