All these format types are appropriate for certain types of content. It is important to note that although the prepared templates make the writing easier, the decision on which template to use is still up to the writer. If you are having problems choosing which one fits your topic, you can browse through past articles and see how each template has been used before.
Lastly, you will need to consider the production of your template. Depending on your industry you need to pick the best invoice to suit your needs. For example, you may use an invoice template that you customize electronically and print from the convenience of your office before submitting to your client. Or perhaps, the invoice will be sent electronically through email. Or you may require a handwritten invoice form that your technician can complete in the field. Most likely, your company will require a combination of these. Using a template can ensure that your companys design and branding elements are consistent.