I started with Calyx on my Pixel5 it was good, but i think GrapheneOS is better. MicroG is good, but its still maintained by a 3rd party. Having full GPS but in a non previlidged state is nice to have (and it can exclusively on a work profile). I switched to GrapheneOS about 12 months ago, on my Pixel 5.
I just want to see what features I will loose (dont care about tap to pay) and how much I care about them… For me the biggie is the camera features.
Tap to pay works just fine with my banking app. Also, you still have the possibility to install the google camera app and it has all of the features that are on the stock rom. The default graphene camera works jusy fine for me, it has what i need, support the optical zoom and automatical switch to the wide-angle camera, the picture quality is greate ! I find the Google camera app rather annoying because it only lets you go to Google Photos, and does allow shortcuts to any other gallery app…
