Should I upgrade to the iPhone 7 or 7 plus? What is the difference other then the screen size?

Should I upgrade to the iPhone 7 or 7 plus? What is the difference other then the screen size? - 1

http://www.gsmarena.com/...one2=8065&

Main difference other than screen size is the camera and the size of the battery. Another point to note is that the iPhone 7 Plus display resolution is HD. The other one isn't.

IPhone 3

Screen resolution, battery capacity, cameras, RAM, etc