I'm enjoying it. I got lucky on the preorder and have had one since launch. Other than some growing pains with software issues, I haven't had any negative experiences.
The best feature IMO is the load times. I am currently playing the Demon Souls remake. I had the original on the PS3 when it released back in 2009. The load times were painful considering the amount you would die and have to load back in to the level.
On the PS5, its almost instant. From death to being back in the game is literally a second.
I had the same experience with Miles Morales as well.
The system is super quiet compared to my old PS Pro. Overall I think its a good upgrade to the PS4 Pro, and I would recommend picking one up if you can.