I love the MMX series and the Zero series afterwards was pretty awesome too even if I never got to finish it properly and I pretty much missed the boat on the MM Starforce series which is apparently the farthest along in the timeline with the possible exception of the Legends series.

I generally feel the X series faltered after the jump to PS2 though Command Missions is deliciously fun and X8 is a huge step forward compared to the utter awfulness that is X7. The first game will always be my favorite, followed by X2, X4, and X6. While I am well aware that Zero was originally meant to be the MC of the series, I always did kind of get annoyed how he supplants X in X4 and 5 cause I always felt X was the better developed character and it was annoying watching him get the less useful and important as the series went on until Axl showed up and stole Zero's thunder.

I think this is partially why I liked X6 so much cause it brought focus to X again and watching him deal with the world in the post X5 events was pretty awesome since he really starts to drop the whole pacifism element and the game's plot still largely falls inline with the Zero series.

Also Hadoken is a bitchin move.