Maemo was great. I still have an N770 and N810 kicking around.
I still have mine but its literally a brick . The screen broke many years ago , so I used it back in the day to hack the ps3. Someone coded the geohotz hack into a payload in the kernel on boot up. Oh memories.
you reminded me of the nokia lumia 920. great design, camera, and screen, but hampered by a nascent os. nokia really seemed (seems?) to understand hardware.
Software too. The Nokia-made apps on the 920 were all extremely polished and worked perfectly with the rest of the phone.