Well for me It's Argonian, as my son always chooses them in Oblivion, and i favour the Dunmer, so the argument has lasted 5 years and looks to continue well into the future

Lol!
I always play-argue with my boss at work cause he is a die hard lizard, and I Dunmer. I shut him down though last night with this one....
"So you guys decide to attack us after a natural disaster? How noble of you. That's like China invading Japan right after their tsunami. How noble would that have been?"
...owned... he just laughed and said, "Well we saw an advantage, and we don't have many vs Dunmer so we took it and owned you guys."