Is it now time to get the D800? Guinea Pigs have now tried them out.

You crack me up!!! I think you need to use an acronym instead, like GP. But then again you don't get the response you want.

I don't see any problem calling them Guinea Pigs myself, but then no one has offered up any choices either.

Let's start the alternate to Guinea Pigs here... Let's try...

D800 Newbies
Beta Testers
Left AutoFocus Group (LAG)
Right AutoFocus Group (???)
Camera Testers (CTs, mind you this could mean something else)
Woodies (when you see a nice new camera, a guy gets one of these.)
The Brave

I personally like "Woodies"