iArmBands iPod ArmBand / Arm Band for Video iPod & Classic
I didn't like any of the option for my Blackberry 9600.  So I took a chance on this one.  It was cheap and it holds the BB perfectly.  It doesn't have a spot ofr the trackball but I cut a little one in the plastic for convenience though it wasn't required since I don't need to play with it while running.    Good product cheap price.