The icon is the most appealing as the other ones just show that you will be taken to more info. While the icon is clear that the user will edit.
I would also make it a hover affect for it like so:
$(document).ready(function() {
$('#test2').hover(function(){
$('#test').addClass('glyphicon glyphicon-edit');
},
function(){
$('#test').removeClass('glyphicon glyphicon-edit');
});
});
the #test2
is the cell and #test
is the span.