i have a n9 and recently bought a used N8.

I find the N8 more usable than the N9, especially with a better camera. To be honest, the 808 at $699 USD is way too expensive....you can get a used N8 for under $200 USD. yes, the N8 is slower and less ram and shitter camera than 808 but still worth it in my opinion.

the N9's hardware is fantastic..looks great...and love the curve display and calendar capabilities. but as of now, my daily has been the N8 and the N9 has been collecting dust.