Are your players performing good? Do you get good results?
i also think that having an Extra star or more specifically a white attribute is better than having a SA.
But the thing is all the good teams that i have seen all of them have a SA on each player. All the top 100 association teams also have SA on each player.
i don't want conform with what others do. You seem to be a very old player of TE and moderator too so can you please guide for choosing one thing among-est SA or extra star or a specific attribute(like shooting/strength)?