I want to raise a character to do quests and running low level dungeons for achievements. With lvl90 stats, DPS and survival are generally not issues, hence mobility has paramount importance for efficiency.
Based on my observation, some possible candidates are
WW Monk, with Roll and Flying Serpent Kick.
Feral druid, in Cat Form with Dash and Stampede Roar.
Warlock, with Burning Rush.
Rogue. I've generally seen them moving fast but haven't figured out what spell it is.
Some other possibilities, unlikely the fastest but I am not sure
Priest, with Angelic Feather.
Shaman, in Ghost Wolf form.
Since I haven't tried all of these classes myself, I'd like to know: in reality, which class/spec has the best mobility in the context mentioned earlier?