What do you think is the WORST client order? The Most fun or most useful one?

Rules:
Must be repeatable (a one time thing can't be that annoying)
Can be seasonal/event related if it's repeatable
Why do you like it? Why do you hate it?
Is it bad because the payout is poor, the quest itself involves only super annoying monsters, or the drop rate for the yellow boxes is lousy?

I have not been on all the CO's, they've done super great by making tons of these.

Worst:
Either the banther hide one, because you always get at least 1 banshee hide right away, but then either the banther won't come out, or if he does, it takes so many of him to drop it. Also the item icon for it looks a bit like a flattened squirrel.

Surprising one:
Roddy/Lottie (W/e her name is) cadet girls' "Kill the tainted fangulfs". Been doing forest quests, open forests, MPAs for like 3 days now and not a single infected wolf to be had. Beat that infeced oodan one like 5x now while still getting 0 on the other.
Gilnas armor, for whatever reason is bad too.

What repeatable one will you take once, but never again?

Best:
Something of Xie's, when she's around?
She never wants too many things to be obnoxious (40 fordoran horns for franka...whee) and the drop rate on them also tends to be decent. Her EXP ratio is always really high too.

Maybe Klotho, with his giant pay outs?
They're good for actual fun-fun too....if you can get a team together to run it.