Level WHM/BLM/RDM/BRD/NIN/WAR/SAM/BLU/DRK on my main.
Level NIN/WAR/SAM/DRK/MNK/DRG/PLD/BRD on this alt
I'm geniunely curious: What motivates you to run the same MSQ dungeons once again on an alt all th way to 80? Maybe it's because I'm clearly "allergic" to dungeons at an irrational level, but doing that stuff again is a big reason why making an alt character is - outside of skip potions - is not as an attractive choice as it "normally" would be.