I really liked Code Geass, however, the fanservice in the second season got a little out of hand for my tastes (I actually do like fanservice at the right times, but they kept showing it at the wrong times). Also, the feeling of strategic victories for Lelouch, pretty much the reason why I liked the first season, was lost a bit. It seemed more based on "Their Knightmare is better than ours, we must retreat" rather than strategy, which is a shame because it was one of the highlights of the first season. Also, there was that whole Rolo nonesense... I really disliked Rolo. Anyways, the ending was done superbly, which is probably why it left such a lasting effect on you. It's definitely a solid anime. Anyways, for suggestions of shows I like? Well, Fate/Zero is probably one of my all time favorite animes... Anyways, if you plan to watch that, watch it, then read the Visual Novel of Fate/Stay Night (or wait for the new anime adaptation for the Heaven's Feel Route), because Fate/Stay Night is rather sub-par compared to Fate/Zero. I could probably suggest more, but that anime seems very fitting for the three shows you said you liked (SNK, Death Note, and CG). Also, watch Free! #swimminganime