The Dresden Files RPG is a great game and it uses a great system, however, it is flawed by being way to convoluted in some aspects and the thamaturgy rules are incredibly complex. I played Fate Core first then moved on to the Dresden Files RPG even though I got the DFRPG first because the rules were getting a bit over my head. To be fair, this is because the DFRPG is using an older version of Fate that, by Evil Hats own admission, was a little TOO indepth and complex