I have read most of Tom's books and they were pretty good but you did have to siv through some of the junk as with anything.
I've never been to a class but Tom has a real sketchy past.
There is a guy I met who is an Air Force sniper, MP, teaches there wilderness survival stuff etc etc. If he gets out or has some time off it would be cool if he could do a class. Mike is a good guy but a little rough around the edges...several tours in Iraq could do that I guess.