I don't know. Tsundere is my favorite archetype. I like the shy girls too, but tsundere girls appeal to me more. Example: I like Haruhi over Mikuru, I like Kagami over Tsukasa, and I like Asuna over Nodoka. It may be the fact I exhibit tsundere traits as well, but in general, I love me some tsundere.

But you can like what you want! I just love me some tsundere.