I would advice Silent Möbius. I especially like the little stories behind all the main characters. Their weren't necessary for the plot of the serie but they make it in my eyes great . SM has also a high grade of herkijkbaarheid (rewatchability ? ).
Another one I can advice is Weiss Kreuz . A lot of action and a somehow intresting plot . Here the main chars have also their own background wich is integrated in the story what makes it for me more intresting .
Gravitation is also a lovely anime but this one is more for girls I gess. A very high sap-grade but also a few dark sides are included. The perfect anime to watch when I just want to sit down and relax.
