I'll answer seriously: Suzuka
There are alot who hate it, but I found it really good. The characters actually develop during the show and it tries to be taken seriously - its a massive change seeing characters actively persuing their love interest rather than never gaining the guts to confess their feelings (ie FMP, LH, AMG). The characters are very believable and act accordingly. However, be prepared to be annoyed at the lead for being a dumb ass at times, but its more so because he is narrowminded, stubborn, and naive in personality rather than to convenience the plot.