I like a traditional, value-centric debate. The clash of value / criterion is critical, and supporting contentions should be clearly linked. I do not mind unique approaches to the topics, but I prefer the focus to reaming on the value clash and ability to show its influence on the contentions and evidence chosen. Extended analysis can include social impact, both pro and con.

Cooper's Paradigm -

To be able to judge a round, competitors must speak loud and slow enough for me to understand their arguments. Arguments should be supported by evidence along with sound reasoning. Dropped points do not necessarily win a round.

I find that it is best to judge on what's being said and understood rather than the largest amount of evidence presented. I want to see competitors use their voice to convince me of their position rather than sprout out tons of pieces of evidence. I want ethos, pathos and logos in your arguments. That being said, I need to hear the arguments so rate of speech is key for me, especially in cross examination.