Well, you really can't go wrong with these 3. The entoo pro is not as silent as the R5. The cable management on the enthoo pro is about a little bit better than the two (just look at the internals) and has more features. Functionality-wise, I'd recommend the Phanteks if this is your first time building a PC. The R5, however, is the most silent. Very nice, sleek, clean-looking case i must say. It's also smaller than the two (it's a mid-tower) so it could be a plus for small spaces. The H440 has very good design too, but the airflow's not as good as the Pro and R5. The rest is about the same.
R5/H440 for looks, Enthoo Pro for features and functionality.