I have to admit Grievous is cool (now that he is not asthmatic), but I do like Durge he looks equally as cool.
As for Jar Jar I hope they can save this character, I may actually grow to like him.
Are you talking about Grievous's cough? I think he has it in the show, despite not having it until the battle of Coruscant in the original one. (Maybe Mace only caused it to come back. Well, that's what they'll say now.)