Bountiful Yield II gives +3 yield for the next gathering attempt on low-level nodes, if your stats are good enough. I believe this makes King's Yield II obsolete, unless the extra actions bother you.

4-attempt low-level node:
KYII - 500CP, 12 items
BYII: 400CP, 16 items
5-attempt low-level node:
KYII - 500CP, 15 total items
BYII: 500CP, 20 items

6-attempt low-level node:
KYII - 500CP, 18 items
BYII: 500CP, 21 items
BYII: 600CP, 24 items
And as a bonus, the items-per-CP efficiency of BYII doesn't depend on how many attempts each node gives, so you don't have to waste time or CP waiting for those +1 or +2 attempt procs.

I don't know yet where the breakpoints are for each level (that is, what stats you need to get +3 from BYII on a particular level of node or item.) Anyone?