I would agree that Retronauts is the most solid. Contains knowledge and personal experience. Jeremy Parish has a solid knowledge of the history, but does not really go pre-8bit.

I used to listen to RetroForceGO, but I do not have to fill as much time with podcasts and the more into the hobby you are the more annoying the show can be. Seriously they had an argument claiming that Street Fighter 2 came out on the NES, so if inaccuracies are not a problem for you then go for it.