From what I've been told, Voris' 'subscription based' materials are very good, though I do not have a subscription, only on his email list for the videos. What's been said so far is very good, it seems that his main use would be as a stepping stone from the NO to Tradition. Iuve said he doesn't pull punches, and that's true to an extent. I believe that he understands the problems in the Church better than most Catholics, but he does not apply those principles where they really belong (the post conciliar pontiffs and VII itself [as opposed to it's 'spirit] and the new mass itself). He has the imaginary prisoner pope syndrome. I watch his videos every day (though I don't usually finish them) and it has become very frustrating watching him discuss this fantasy of a holy and orthodox pontiff (whether BXVI or F) surrounded by wolves at every turn.
At the end of the day, he's a tad who I pray will cross over. He's a sharp guy, and he's a good speaker and his zeal and devotion are unquestionable.