Aluminum cutouts

I bought all my aluminum sheeting on friday and I need some advise.
After I get my side panels up and cut the profile ( I'm not worried about that ) what is the best method for making the cutouts for the door and windows? Should I use a trim router with a laminate trimmer bit, a roto-zip, air shears or just good old fashioned tin snips? Any advise would be appreciated. Thanks
After I get my side panels up and cut the profile ( I'm not worried about that ) what is the best method for making the cutouts for the door and windows? Should I use a trim router with a laminate trimmer bit, a roto-zip, air shears or just good old fashioned tin snips? Any advise would be appreciated. Thanks