Of the various tools I got exposure to, I would say Dell Foglight was the most unpopular. GUI was very basic and it was cryptic to interpret.
Dell Foglight may not be as bad, my opinion is based on limited exposure I had to it in 2014. People might still be using it and find it useful. I wonder why that project had Dell Foglight when there were other better options. May be pricing could have been the deciding factor. In a period of six months it never provided any useful information.