I've been toying around with my replacement N86:
-apart from a sticky "3" button, build quality on the slide seems better. I think it's just a placebo. Maybe it being a "newer" phone also has something to do with this.
-call quality sounds the same; I've gotten used to it, so it doesn't bother me anymore
-directional pad seems crooked on this one as well, so I guess every N86 has some version of this issue
Here's something I noticed: my two N86s are slightly different colors. One is more of a gunmetal gray, the other definitely has a hint of blue (indigo) to it. I thought this was odd, considering they are labeled as the same phone.
I've grown to love this little guy. Can't wait for the new FW to drop-