I prefer Scar name wise because the translation of the name Taka means "waste" in Swahili. But personality wise I prefer Taka because he seems more "peaceful".
Well, Taka and Scar are really the same lion just at different ages. I actually prefer the name "Taka" over "Scar" because Scar sounds like more of a nickname to me than an actual name. Personality-wise, I like Scar better simply because we don't really get a good look at Taka from the films.
I'm going to go with Taka on this. I have sympathy for Taka, being named after a pile of garbage and all, but he gets to be too evil later in life for my tastes.