Brian L: Sorry, just realized I misread your post! I stopped on a 5-channel setting for a few seconds while going through sound options on my way to stereo, and will try 2-channel with EARS. I did notice a difference in sound in 5.0, will be interesting to play with this feature.
Chu Gai: LOL!! you buying???
Regarding plugs vs. bare wire, I've left the bare wire connections to the speakers as-is for now, since these connections were easy and are relatively clean. The back of the NAD (as I'm sure are others) is a mess for those without nimble fingers, so I would definitely fall into the camp of those who prefer plugs to bare wire on a receiver's speaker binding posts.
I use these. I buy them in bulk because I often use them during installations. For $3.20/pr they're well priced for the quality and I like the compression style connection.