I bought a PSVR which made me buy a PS4 Pro which made me buy a 4K TV. The pro is a much better console on paper but, at the end of the day, the improvement is disappointing or negligible (IMO). I jump between the Pro on my 4K Bravia and the vanilla on my 1080p Vizio all the time.
The PS4 itself is still a better purchase than a Switch but you're going to be let down if you're expecting a big difference. Think DS Lite vs DSi (only less noticeable).