I would recommend the n810 (price being no object). The thumb keyboard is excelent (as long as you are not writing a book) I can't imagine not having one.

I was like you, also torn but I went for the N800 and I dont regret it at all.

One great thing about the n800 vs the n810 besides the money saved, is that the five way navigator is usable without having to pop out the keyboard, comes in handy when using it one handed.

Also, call me a geek but all my gadgets I protect with silicon cases that give the best full protection with less bulk. I'm fairly certain that a silicone case is not possible on the n810