Good Voice Actors - Check
Good Slice of Life-ish storyline - Check
Good Animation - Check
Good Pace - Check
Good Male Lead - Check
Good Female Lead - 2 out of 3
Main Female Protagonist - Epic fail.
Great show. I won't hate it merely because I'm a Taiga hater. Aside from hating lolicons, I hate her personality. Overall she's a fail. The fact that I still like the show despite this incredible flaw is a testament to the quality of everything else. And Taiga did have a good voice actor, albeit I'm a bit tired of hearing her in every loli roll.
Thank god Index only has a minor role in her show or the winter season would have been even more frustrating.
[edit] I'm of like mind with loosecanon that tsunderes are to be hated and loathed. Though I can't let one annoying character ruin such a well done show for me.