His favorite favorite was Bal a Versailles by Jean Desprez. He used pure perfumes.. those tiny tiny bottles and he kept them in his pocket. Also, in 2009 when he died, La Toya said that in his house smelled so strong Black Orchid by Tom Ford. He loved Black Orchid too. Time ago I've read that in this video he used Obssession by Calvin Klein... but I couldn't find the entire video, where we could hear his voice ..
Anyway, he used A LOT!! People would know Michael's close.. even before he would enter the room.. so strong he smelled!!