The iPad can run far more business apps than the Amazon Fire can.
I have had an iPad, and now have an iPad 2 and an iPad mini. Will buy another iPad mini when the 5 comes out.
I also have the Kindle Fire, an older expensive one, and it is fine for entertainment, but the closed architecture makes it worse than an Android tablet for running business apps.
I don’t think I’m running business apps. I only use it for personal use. I see no problem with the display. Like someone replied to me, a $400 difference in price makes it worth my while.