Welcome to the forum @Dazeoff_! Personally I'm going to go with the manual because who knows how much longer we'll have to get a manual sports car like this. I've seen and heard the 9G-Tronic is solid for an automatic but I'll leave that for someone else.
If you're really into the technical stuff here's some good videos about the 9G.
If you're really into the technical stuff here's some good videos about the 9G.