Monk weapons

[Nanakki]

I'm having a difficult time figuring out what makes a good monk weapon.
The delay on a weapon is read like this: Del. 28 = 2.8 seconds, Del. 10 = 1 second, etc. Right? Delay for a secondary doesn't matter as it procs only off of your primary through your dual wield skill, correct?

Also, is moss covered twig currently the best primary for a monk?

Thanks in Advance