I've been following the manga about a few years ago, and decided to finish it up after I heard it was going to have an anime, one month prior.
Read it, I felt the life force draining in me. The manga made felt as if I was in their cause, and seeing the slayed comrades made have a fictional thousand-yard stare.
Was planning to cosplay either Colossal or Armored Titan and do that silly dance in the Kyojin-kun video. :3
Still the anime fits perfectly with the manga, but it goes amazingly fast, with the first two episodes going past Chapter 16. People often say that people who read the manga often reduces the fun when watching the anime since we already know what's happening. I have to disagree on that as the anime gives a whole new perspective to the manga, and thus enriches it with actual sound and effects.
Also, being a dick cause of spoilers is fun. :V