One unique quirk I like about YYH that no one seems to talk about...Justin Cook's southern accent comes thru at times while voicing Yusuke. Try to remember if you caught the numerous instances of him pronouncing the word "him" as "eem".
"I got eem." "I didnt't wanna kill eem." Fitting for the Yusuke accent, IMO. Also, i used to think Sabat's portrayal of Kuwabara was so annoying but now I think it might be one of his better roles as far as performances go. Even so, you can still hear him starting to sound more like Vegeta and Piccolo as the show goes on.