I feel easily able to pick Luke over Obi-Wan for the reasons that ric just described as well as my own tastes. Luke just served a greater overall importance to the real story. Obi-Wan helped guide Luke to that destiny. As for the other, I'll have to get back to you on that. Both were wonderful in the OT but were very much screwed over in the PT. I loved both characters in the OT, yet they both annoyed me in the PT. It's hard to make.