When you consider that PUP lacks the Martial Arts traits of Monk, has no access to Coloured Belts or Fuma Sune-Ate, and is also unable to use Dusk set, you're gonna want to use all the haste you can. Where you don't have haste you're gonna want the
maximum Accuracy you can get (i.e. Peacock).
With regard to the neck slot and whether or not you need the Acc, let's assume that you're going to be using haste gear
wherever possible. Meaning...
I'd recommend one of these:
...over one of these:
This:
...over this:
So to compensate for the lack of Acc in other slots, I'd therefore use this:
...over this:
It's important to consider what your entire setup is before making a judgement about whether
"this" is better than
"that". Like Roadkill said, a MNK could make more use of a Faith Torque provided he's using a setup that focuses heavily on Acc to compensate for it.