Well, so far I don't mind the S10 too much. I have thought about getting the + instead, but I'm not sure I want the larger phone again. The regular is plenty big, and the weight is nice. My iPhone XS Max feels extremely heavy after using the Samsung.
I haven't had too many issues with the FPS with the included screen protector on. Every once in a while it will fail, but for the most part it works.
My only real complaint is with the keyboard. The keys are a lot more narrow on the Samsung keyboard than the Google keyboard, and yes, I can change it, but I like the look of the stock keyboard, especially if I'm using night mode or whatever it is called.
Its unfortunate that some of the apps I use look better on iOS than android, but that was known already, and is the fault of the developers, not Android.
I've not had a chance to really put the battery through its paces, so I'll see how it goes tomorrow. If for some reason the S10 doesn't last all day, I'll quickly switch to the +.
Edit: Another thing I've found is that the AOD isn't actually always on. It turns off after about 10 seconds Not sure if that is a setting or not.