Steve Featherkile said:
Me? I like them both, I just can’t find the off size allen wrench for the split jaw.
That might be because it’s Metric? I’ll check later. When I first started laying track I went to the hobby store and bought some ball drivers; one for Aristo track screws, one for Hillman clamps and one for Split Jaw clamps and labeled them AC SJ and H on the ends. Most of the Aristo hex cap screws are too shallow for the driver (why I changed to the larger Phillips head track screws) , but they work great on the clamps. Much faster than fooling with Allen wrenches.