I work on refrigeration and lighting/HVAC controls for a supermarket chain in Wisconsin and Illinois. We used to have 4 in-house refrigeration guys to tap for advice and questions. Now we use all contractors, so I turned to the internet. Google always seems to point me to this site, so I figured I might as well join.
It seems like some contractors love controls, some only like one kind, and others think everything should be mechanical. Working with people is always interesting. Irritating sometimes, but interesting.