Already own the E60 version of this, and have been lurking here for a couple of months reading everything on the 60", the 70", and a variety of other topics - what a great resource!
And then I got really lucky yesterday. Stopped by Costco for a regular shopping trip, and saw one of the E70's set up where they typically sell the display models and returns. It didn't have a sign on it or anything, but was hooked up and looked good (the Costco staff had previously let me play with the settings on their main E70 display, so I had tweaked/improved that picture quite a bit a few weeks ago).
I found a Costco employee and asked him about the E70 sitting with no sign. He said they had just hooked it up for display and sale, and it was a return of a Black Friday weekend purchase because the original buyer found that it was too big for their wall space. He said the original buyer stated they had never even hooked the set up, that it had only been out of the box long enough to determine they couldn't make it fit in their home.
The best part - the employee did some checking, and I did some negotiating, and I bought it for $1,380. That was the $1,480 price they were going to tag it with, plus they gave me the $100 instant rebate that is currently in effect for the full-price new sets.
Got it home last night, and first impressions are very favorable. Played with the settings a little, and I definitely think the picture quality is a bit better than the E60. Watched a few snippets of BR-HD, OTA-HD, and streaming content, and everything looked great. Very responsive Wi-Fi, and, maybe best of all, no visible clouding or unevenness on a black screen. HD football today is the next test, but I think I found a great deal on a keeper. And it is definitely a whole lot more screen than the 60!