Personally I find the NXX series phone is one of the most horrible on the market currently. I've touched it and I'm amazed they actually let such horrible software out in the phone.
I know of 3 people who got rid of their N80 within 1 month of buying it;
1) Too laggy
2) Cannot send SMS
3) Cannot receive SMS
4) SMS (sending and receiving) lag by ten to twenty minutes
5) calls aren't very clear at times
6) Oh yes, the phone crashes so often and so badly, that my friends has to take out the battery and put it in again to restart the phone.
3250 as well. In fact, any Nokia phones running off Symbian OS and their S60 series interface, is simply utterly unreliable! Slow SMS sending, hang during call accept and automatic restart due to memory overload, and definitely more!
I am hoping to jump to Sony Ericsson asap, perhaps with W950i.