I have a 770 that I never use and haven't really figured out a use for. Despite that I think of getting an n800 (they are available pretty cheap sometimes) to use as a media player since it has two full sized SD card slots, that can be used for sdhc and maybe even sdxc. With the advent of the n900, the n810 became less interesting. I do want to get an n900 when my finances permit it. I'd perhaps use it mostly as a programmable 5mp camera and pocket computer. I'm not sure if I'd use its phone/3g capabilities at all.