For the home user, HP is plenty. Pro gives you XP Mode (easily replaced with VirtualBox and an old copy of XP), ability to join domains (not required for home PCs) and backup to networks. See the article to replicate some of those features if needed; click here
Compare versions; click here
Yes, Office 2007 works with W7.
Should I upgrade to Windows 10? 8 reasons why you should upgrade to Windows 10... and 2 why you…