I've been running GrapheneOS for over an year now. Bought a Pixel 6a last year as a cheap way to test waters, but pretty soon I upgraded to discounted Pixel 9. It took a while to set the basics (coming from iPhone), and I'm still have a couple of stuff missing, but at this point don't intend to use anything else (for as long as possible).

The biggest hurdles for me were - should I use separate profiles and how to get apps. Initially, I started with a separate profile for google stuff (like play store/services and apps downloaded from there, like Viber), but eventually I moved everything to the owner profile (and took a bit of a privacy and battery hit in the matter of convenience). Still, being able to control many app permissions, gives me a good state of mind that apps are not doing more then I expect.

Just looked at what android 17 brings to the table and I'm mildly excited - especially improving performance and adding more permissions (like ACCESS_LOCAL_NETWORK)