I'm looking to purchase a Fenix 7x pro and wondering if the display is easier to read on the 51mm v 47mm display. Given my age and eye sight will be getting worse over the life of this watch. The Battery and wrist size are not issue, just looking at which will be easier? For the Price I could get an Epix Pro 47mm or Fenix 7x Pro 51mm, or save a few dollars getting a F7x Pro 47mm over F7x Pro 51mm. I'm still using my F3 after eight good years.,