got a nokia n80. Nice ideas, but poor implementation imo.
pros for me:
-web browser is very slick
-keypad is nice
-call quality is good
-screen is very high quality, crystal clear and bright
cons for me:
-battery life is terrible (i get 1 day if i'm lucky, but i'm a fairly heavy user, 30mins phone calls, 30mins 3g/gprs/wifi, plus generaly texting and checking)
-build quality is not great - mine broke in under a month. In general doesn't feel that well put together, especially compared to my previous SE phones.
-os is slow, compared to my old p910i.
-crashes fairly often for no reason, had this on both n80's i've had.
overall, i'm switching back to SE as soon as the p990i arrives. N80 to me feels like it needed a bit more development before being released.