I have both as well, but after a recent outing I realized I was using my D7000 so much, I forgot most of the commands for the D5100. So I am considering getting another D7000 and perhaps either selling the D5100 or keeping it as a loaner or back-back up.
I bought the angled eye adapter for the D7000, I found out that in the bright sunlight of the south I can't see the screen on either the D7000 or D5100 outside. Most of my pics I had to take, then go review somewhere else under the shade or something anyway. The LCD only helps me in low light conditions.