The best part about vortex is that it has made my life easy, I can now easily do all of our invoicing from anywhere in any device without having to upload files or go online! It's also very simple for customers as well because they just have one place where everything gets uploaded at once so no need going back-and forth between two different sites like we used too before with other software companies!! Nothing really but this program works great if you are looking into an invoice management system then definitely consider using since its affordable compared t o others out there.