Ok so I don't like loong reviews so I'll cut to the point. I've seen quite some anime, not like crazy but around 200, and I've only given the perfect score of 10 to:
Evangelion 2.0, Black Lagoon: Roberta's Blood Trial, Code Geass, Hellsing Ultimate and Fate/Zero... and I even surprised the 1st time I analysed my experience with this series and came out with a score.
And the main reason is that this anime is a comedy/romanceish (more comedy) and I laughed my a** off the whole freaking time, I'm not usually into dumb, random situation kinda comedy, but this shiz made me laugh so hard man.... I recommend it 100% is just FUN, really enjoyable, amazing to spend time and get a smile and get a nice day :)
Go watch School Rumble NAO!