Oy, this stuff makes my head spin. I would say my Kuota is twitchy; so if that's the same as unresponsive, that's what it is. The trail stuff is a little harder for me to get!
I am definitely looking at 47 cm. that's what I had before and that's what I rode in Portugal. As far as which one, not sure yet, probably the one below the top or right below that.