Reception is flawless, but my callers say it sounds like I'm talking in a room with no carpet on the floors (???). No one reported to me that it sounded bad, just different than my previous phone.
The quality over the earpiece is definitely worse than my N95, as it is sometimes hard to make out what people are saying if they aren't talking directly into their phone; on my N95, you could tell that people weren't talking into their mic properly, but I could still make out everything they were saying. I find that I have to ask people to repeat stuff sometimes, where I wouldn't have had to before.
Speakerphone quality is definitely worse as well, both in volume (slightly) and quality. Things don't sound nearly as crisp on my end, but all of my callers couldn't even tell that I had them on speakerphone when I was talking to them. This is a plus for the N86 in this regard.
In terms of background noise, I find no difference when compared to my N95 or N80 (two of the BEST sounding phones, IMHO). I can hear everyone perfectly with while driving with my window down and my stereo on, but as I mentioned above, just not quite as clear - - sometimes muffled.
I haven't owned the E71 for more than a few days to make an honest comparison. I have owned the E75, and it is louder and has better quality than this. Reception on the N86 also blows the E75 out of the water.
I'm coming from an N95 and an N80, and while the voice quality isn't as good on my end, it is by no means poor. I'm pleased with the N86 so far, and I think it may have a permanent place in my drawer like my N80 and N95.
It is, but I just don't feel like messing with the whole thing this weekend. I'm enjoy my N86, and I paid as much for it as I did for my N80 years ago. Further, it's definitely worth $500 to me, but I'm happy for everyone who found it cheaper. If I was an N97 owner early owner, I would probably feel a little burned considering the phone has dropped in price by literally $170 in about 2 months.