My 2 dps are BLM and MNK.
BLM because of "Exploooosion", ie the power impression of Fire IV and Xeno and the overall flow of the job. More over I like the turret challenge, finding the sweat spot and try to move the least possible. It thought me to remain calm during encounter, knowing the fight to time everything and position yourself to allow maximum casting time. This helped me a lot in my healer jobs to maximise DPS time.
MNK because of the opposite, I like the moving challenge, always be at the right position. I know I'm bad at it but I enjoy tryingAnd I miss the real Lightning speed.