I use the red OR8 heavy tension Offshore release. You can place the line at different depths in the pads depending upon how far down or the relative size of the fish that you are catching. The pads are replaceable if you are lucky enough to wear them out.
I use a clear snubber in front of my release. Really helps to see shorts because between the length of the cable on the release and the snubber they can bounce and be seen rather than dragging them around all day.
One other trick is if you do have a small fish that does not release I find I salvage more fish if I put my thumb on the reel spool and then drop the down Rigger until the release. Much better than dragging them up through the water column.
Grey Beard