Office 365 Home Premium is the way to go if you are in the market for Microsoft Office
For $99.99 per year you get the access to the full Office suite including Outlook, Publisher and Access. You get access to the latest version. You can install the software on 5 PCs or Macs and 5 mobile devices. In case you are on the road you can use Office on Demand that allows you to run Office apps on any computer with an Internet connection without needing to install the full Office suite.
This compares to $219.99 for Office Home & Business 2013 that you can only install on 1 PC, does not include Office on Demand or Publisher and Access and that you will probably want to upgrade in a few years anyway.
If you are in the market for Microsoft Office, Office 365 Home Premium is the no brainer choice.