Lucky for me, I was so close to buy a PS4 last year when my friend told me to wait for one more month for the PS4 Pro, and it was worth the wait. I mean last week I tried monster hunter world beta, the game has better resolution and graphics than my face in the mirror!!
for new users who have 4K TV i would highly recommend PS4 Pro, for people who already own a PS4 it would be a tough choice to replace a perfectly working console.