The benefit is using nitrogen vs NOT using nitrogen.   If placement is the same across the types, it's almost a push.   

I use liquid N.  It isn't superior to AA or urea but I can store it at home, shop around for direct ship, load up at home and go apply with applicator or load the nurse trailer (already have the nurse trailer for spraying anyway so utilizing something I already own and operate). If it rains fine, it sits and waits until it's dry to go.  Meth head's aren't stealing it but that seems to be calming down.  It fits fine w/me, my set up, and my way of thinking, that has value but not sure it qualifies as a 'benefit'.  If I had to change I would go with AA, and urea would be the last.....I think - lol.