What is the best sign software

Have been away from the design part of the sign trade
but have 15 years plus in fabrication and installation.
I am looking for a software that you can easily inport and export
designs and make layered designs.Must have lots of fonts and graphics and can run a plotter.
Plus what would be the best plotter to purchase 24"-36".

Would like a pros imput on this please?

Thank you,
Kelley