Bad side: since the arcs were all done by different people then the animation style and the animation itself weren't always what you'd hope them to be.
Good side:
- the stories had nothing to do with each other so every time you had the nice feeling of anticipation because you had no idea what's going to happen.
- They different styles were rather refreshing
- The opening song is bloody addictive and the opening was redrawn for each arc so that all-an-all it would be the same but the elements in it would be ones that had something to do with the current arc.