I absolutely love everything about this series. The animation is so much like the manga, and the story is quite accurate. There are plenty of funny moments, as well as drama, and of course, plenty of boys loving on each other.
The couples' relationships are all very different, so it doesn't feel like watching the same two people whenever it switches from one to the other. Also, this series has one of my favorite characters of all time (Usami Akihiko), and it's extremely difficult for me to choose a favorite anything, so that's quite a feat.
This series is completely made of awesome. It is my favourite.