I don't live on the border so I had to stick with Global Entry, but I totally agree that Nexus is the way to go if you can swing it. I also got the APEC Business Travel Card ($70 addon to Global Entry) that gets you the diplomatic line in ~20 countries while on business travel. Has literally saved me hours in line in Tokyo, Taipei, and Hong Kong.
Agreed. Nexus also bundles access to Global Entry and TSA precheck at no extra cost -- a good investment for $50 over 5 years (works out to $10/yr!).
It's the best deal ever, not only for travel between U.S. and Canada, but also from any other destination to/from U.S. and Canada and within the U.S. and Canada domestically.
I travel regularly from U.S. to Europe and I get full GE and Precheck privileges through Nexus. I usually clear customs in less than 5 minutes as opposed to 1.5 hr line at larger airports like ATL.