Shun remains my favourite, mostly because of the terrific visuals they gave his chain attacks, and the eventual reveal that whilst the other Saints use their cloths as amplifiers, he is actually so powerful, he uses his as a safety cut-off.
Seiya's not my favourite either, and his powerset is the most pedestrian of the Bronze Boys (I punch things really hard, really fast) but he's an enthusiastic little scamp, and his complete and utter refusal to give up (Whether through courage or stupidity is a question for the ages) is to be applauded.