I am sure I posted on a thread like this, but it appears I didn't. Oh, well.
While I have many favorites for a variety of reasons, I picked LBT 10 out of the mix because it made me the most excited out of all the LBT sequels when I was a child. I liked the plot, the action, and of course, the introduction of Bron. That was a real shocker to me; I never thought we'd meet Littlefoot's father at the time. So yeah, it takes the cake.