I came to Samsung from iOS and I gotta' say that things are going quite well. I really love sideloading. The battery is really good, the phone is snappy, and the display is flawless.
I had an S21+5G and found that the S24's battery life and performance fell short. I noticed that the S24 is slower, and I am finding myself waiting for things to load and a longer response time. Maybe I have a setting wrong? Otherwise, it is comparable and works fine.
Long time Pixel user (5,7,8). My Pixel 7 just stopped working one day would not power on...replaced with Pixel 8 that kept overheating. Switched to S24 and couldn't be happier. It just works, fast, no overheating, great display. Only thing I miss is the Pixel Camera App. Pixel pictures were always good no matter what..just point and shoot. For the S4 I find everything is overexposed in auto mode so I end up using Pro mode to tweak. Also wish I could remove the Samsung apps I don't need/use. But overall very happy I made the switch.