It's a tough call. The price on the n800 is almost too good to pass up. I can tell you as an n810 owner that the GPS ain't worth a hill o' beans at this point, and I think you'd actually be better off with an external Bluetooth GPS module than with the internal one in the n810. The other downside is the memory expansion on the n810 is both more limited and more expensive - having two SD slots rather than one miniSD slot makes a big difference; getting 16 gigs in an n800 will cost you about $120 if you shop carefully, but getting 16 gigs in an n810 is still impossible. And just 8 gigs total (2 on board, 6 on the card) will cost you $70.

But having a keyboard rather than soft keys is critical for me, and so far I'm pretty happy I made the purchase. The size/shape of the device is great, the screen is beautiful, and I'm hopeful that the GPS will turn out not to be a huge waste. I don't know how skype is on the n800, but it works so well on the n810 that it almost justifies itself. But ultimately the n810 is probably not going to see a price drop and the difference in value compared to the price is probably not big enough to justify the n810.

I guess that's not helpful, but I figured I'd try.