Our local electric company was giving away 100 1st gen units for free. I signed up immediately for it and it was installed for free a few weeks later. Couldn't be happier with it. Just this weekend, I took off the trim plate that was installed and it's just the unit on the wall now. Looks much cleaner without the white rectangular trim plate.
I had to patch the wall and repaint to get the nest by itself but there was no way I was going to use the trim plates. I love the "port hole" look!