Interesting, my girlfriend's friend bought a FP4 because she wanted an eco-friendlyish phone that would last a long time and she says it has been the worst phone of her life with tons of bugs, super slow specifically over 4G, mediocre camera, android auto works badly, etc...
(She uses android, not /e/ or calyx)
I want so hard to believe, but there are just as many reports of it being very bug ridden as positive reviews, so it is difficult, since the negative ones always seem to be detailed and specific.
I would also consider a pixel for graphene, but no SD card and 128GB or 256GB internal memory only is a deal breaker. My SD card + flash in my current phone is already at 245GB