I came from an S10+.
Not entirely by choice, since I slammed my 1yr old S10+ (without even a scratch on it) in my trunk and killed it (with 11 more payments left). I had saved up to pay it off and get a Pixel 5 XL later this year, but had to get a phone NOW and found a killer deal on a Pixel 4.
I've had Nexus phones in the past, and forgot how much better "Google" phones were than other, higher end, manufacturer phones were.
The Pixel is so much smoother and responsive. I don't miss the larger screen as much as I though I would either, but I do miss the extra battery insurance (last longer between charges), but the Pixel 4 is getting better since getting it almost a week ago.