Wifi Direct world's pretty well, even between my Note 2 and Nexus 7. Once they are linked, they can send files between each other without using NFC. I haven't been able to get the two to work visa NFC, though.
NFC/S-Beam/Wifi-Direct work well between my Note 2 and my wife's S3, though. We just had to make sure the link S set up between the first.
The photo sharing is pretty cool. We've linked a few phones together (my Note 2, and a couple of S3s) and shared photos being taken from each device. We're probably going to play with this more on Christmas Day.