Here is an overview of my review system.
5 - I love it and want to buy it. I recommend to everyone.
4 - It's good; I would re-watch it and would recommend it.
3 - This is the 'average' score. I enjoyed it; and based on your preferences you may too. Not really a second time must-see though.
2 - This anime has problems. I probably regret watching it; it may work for some people but not me. I wouldn't recommend it.
1 - Hated it. Won't buy it, and will not recommend it.