Strongly prefer the wing to get all spots up to the 2yd line.
Philosophy with my crew (when we go out in a 7-man) is that maybe a handful of times a season there might be a situation where the deep guy takes it, but I don't want it to be a regular thing. The deep guy should be backing up and covering action ahead of the runner and the wing guy should be getting the spot from behind. I want that play bracketed between the two of them all the way up the field.
As stated earlier, wing gets a more accurate spot as he come up from behind.
What can sometimes be tough for the SJ or FJ is knowing when to stop, ie where is that pylon? A tip I was given by a deep official from the BigTen who helped train me is to not try and look directly behind you but instead take a quick glance across the field to the other pylon. That will help you establish your North / South position if you lose your bearings.