^MAC Nocturnelle is almost identical but it stays shiny much longer.
I was trying them on, one in hand and the other on the other hand, and the only difference I notice was that Nocturnelle is more shiny than Black Satin.
If you like the shine you should try it. I love them both.
I agree about Nocturnelle, it's really great. Very black and very shiny. It also lasts, I've been wearing it for almost a week and it hasn't chipped or anything.