N81

No, seriously, depending on your budget. N95 is the best of the bunch, looks really terrific, but is bigger than the other ones you listed. I would choose the smallest of the nuch, as I want my mobile phone mainly for talking and I want it to fit my pocket. Especially if you intend to use n800 for net browsing, the advantage of n95 great scree is not that important.

Summa summarum: smallest and cheapest. And separated gps.