Hey, just wanted to chime in...
I was out shopping yesterday with the girlfriend, and noticed that I had "full bars" for my 4G connection, so I went into settings and looked...
-75dBm!!!! I don't check it often, but I was getting really frustrated and actually considering returning the phone due to it always being like -110 to -135 when I had checked, but now I am much happier! This was also in the middle of a large shopping area (not in a mall), no VZW store within 4-5 miles (no grabbing from their 4G hotspots), and there were probably well-over 3-4k people in this area at the time (68 stores, 7 restaurants; from Pier 1 and Sur la Table to Gamestop and a giant bookstore, Old Navy and TJ Maxx to Nordstrom Rack and Brooks Brothers, even an independent and very highly-renowned tailor who will custom-make suits that are absolutely wicked and can stand toe-to-toe with the best Brioni or Canali suit). To put it another way, there are over 1300 parking spots in the area, and it took us over 5 minutes to find a place to park (the lot was like 99.7% full).
Of course, everyone was walking around on their cell phone, talking, texting, browsing, whatever... Yet I still pulled that good of a signal!
AND this is on a STOCK ICS 4.0.2 GNex, no Root or custom ROM or anything!
VERY pleased!!
Now, if only they fix this darn battery "life" (more like battery "death") problem....