I like them both too: milos and dimitrov. this one is hard to predict. I will take a guess and say it will be milos.
I saw about set and 1/2 of the nadal match last night. nadal was not all that sharp. I counted at least 10 forehand errors alone and they were easy forehands under zero pressure.
I don't what the hell he has been doing but he has to put in longer hours on the practice courts pronto.
that is forehand errors with easy/sitting forehands.
here is the order of play for today:
http://www.ausopen.com/en_AU/scores/schedule/index.html