Kyle - It's just more interesting to have a character like him wield the most power weapon in the universe, IMO. Plus, I loved the interactions between him and Wally in JLA.
The only time I've cared about Hal was in New Frontier. (He's not bad in GL:TAS, either)
Everything I like about John comes from the JL/JLU 'toon.
And I only like Guy when he's getting "One-Punched."