In my own rewatch of the 2012 series, I think I might have to revise what I said earlier of it being my second favorite. It actually might be my first. While the 2003 series certainly has a stronger story over all, and probably some of the definitive versions of certain characters; the 2012 series is overall, more fun to watch. It manages to keep the spirit of the 80's cartoon with a lot humor, while still telling some really good stories and not really toning down the storytelling much, while making sure the bad guys mostly remain a credible threat (aside from the basic Kraang soliders). Like the 2003 series is awesome, but I think it maybe takes itself too seriously at times, with Mikey and sometimes Splinter being the main points of comedy.