Found this on the apple site, well worth a read IMO to keep things in perspective as what we see on these forums is often a small # of people having problems with their iphone, ignoring the fact that most people are humming along more then fine with theirs.
PC Magazine: iPhone scores “stunning” ratings
In the 2007 PC Magazine Readers’ Survey, Sascha Segan and Eric Griffith (PC Magazine) report that “iPhone owners passionately love their devices. In its first year on the survey, the Apple iPhone scored a stunning 9.1 out of 10 from our readers, beating the ratings that every other phone, from every carrier, in nearly every category, has received in the three years we’ve been including cell phones. The iPhone’s 9.6 scores in music and video playback might have been expected, but its 8.2 for call quality (a score significantly better than average), another 8.2 for coverage, and an 8.0 for earpiece volume show that it’s not just the i our readers like. They love the phone, too.” [Nov 20, 2007]
http://www.pcmag.com/article2/0,2704,2211391,00.asp?sr=hotnews