...I liked it! XD
I think the only thing that really bugged me was the whole back-story from nowhere for Yuusei and Ushio (Trudge I believe his dub name is?) but other than that I liked everything else, yes, even Jack's accent, it makes me laugh :<
Background music... didn't stand out much BUT it sounded okay and some of it that did stand out to me was cool and wasn't distracting like some of GX's dub BGM was.
Hyper Drive for the opening? It was one of the songs I wanted to win, so I'm happy with it ^o^
Looking forward to watching more, I do hope the dub keeps up some great work, since I made the decision to not get the 5D's Duel Boxes, means I need to get the dub on DVD :D;