What does the company do well? Payroll is easy with Gusto - they can handle unusual needs such as ministers salary, and the automated payroll feature is a boon for a small business. Set it and forget it. Support is friendly and easy to access.
What does the company not do well? Nothing that I have found yet!
What do you wish you had known about the company before using? That they were available for payroll - I had stated using another company that could not handle my requirements, and had to switch over in mid year. Even that was easy with Gusto's help.