Dual Survival is better then all of them. Bear Grylls was over the top on everything. Les Stroud was the most real but always waited till the 3rd day to get food, stupid IMO.
http://dsc.discovery.com/tv/dual-survival/
Cody Lundin and Dave Canterbury is a cross between the 2. Both Dave and Cody run there own survival schools and live the life style. Out of the 2 I like Dave better then Cody because he has a more modern approach to survival and is a better hunter and gets things done ASP. Cody is more primal in his survival and uses more techniques that are tribal based, has more patience and he is more of a thinker. Bios
http://dsc.discovery.com/tv/dual-survival/bios/
After watching Dual Survival on Netflix I went back to watch Bear Grylls and turned it off after 10 mins because he cuts a hole in the arctic ice, gets naked and jumps in. Then he comes out and starts rubbing snow on himself to get dry again. His show is more about how kill yourself.