I'll be the first to comment that I definitely agree with your statement. I was in a really busy NYC Apple Store last night (SoHo for those keeping score at home) and was walking my mom and dad through setting up her first iPhone (4S). It was very clear, I was able to hear everything they said almost in a way like I was in a quiet room. Very impressed.
And the call clarity overall was much improved with no sporadic drop-outs like I had experienced before. I rarely talk on the phone, but this is just one more feature I appreciate!
My call quality is great, but other users notice that when I use my earphones to talk the microphone on the phone picks up all the extra background noise and is very sensetive, I would say hypersentetive. So I can hear them fine but they hear me and a lot of background niose. anyone else having that problem