[Haak]

I still liked Taiga because

Spoiler for Toradora!:

she still helped out Ryuuji and still mentioned how much she appreciated his help. She also became a lot less bitchy and we got to see the nicer side of her more and more. She also had a rather sad backstory, what with her family issues and all, which atleast explains why she's always bitchy. Plus she'd have a lot of moments where she'd screw up, get hit or something or fall flat on her face (a lot of the time BECAUSE of her tsun moments) so it's kinda hard to hate someone when she's in so many hilarious screw-up moments like that.

In contrast, Kirino doesn't actually help out Kyousuke in anyway and has a relatively normal family.