I doubt that it makes a lot of difference, but I like the ones that allow you to use a standard ring connector (1/4", 5/16", etc) on the end of the cable. That way, you attach the cable and you know its secure against vibration and coming loose. Also, since
stainless steel (used in the studs or bolts to attach the cable) isn't such a great conductor, you want a terminal post that allows you to real get the cable in good contact with the terminal.
Larry