Which is the best, yet simple, accounting software with integrated Payslip for small business?

Which is the best, yet simple, accounting software with integrated Payslip for small business?
Small Business Accounting Software with Payslip? I ran a small business company, in the Gulf region, offering maintenance services to properties with about 50 employees. Can anybody recommend a real good and simple Accounting Software with integrated Payslip , which can take good care of both cash flow, sales, invoicing and bookkeeping?