R12 - Question on Diagnostics

Hello,
We would like to know what diagnostics in Payables do you use often and your comments on them.
Would appreciate any suggestions on improving existing diagnostics or what new diagnostics would you like to see in Payables.

What we have currently are
 
Aplist                                       732163.1
General Setup                          732162.1
1099 Setup                              829636.1
1099 Missing Invoice                829644.1
Accounting Health Check         732161.1
Trial Balance Diagnostics         829180.1
Payment Document Setup       732166.1
Payment Process Request      732167.1
 User Setup                            732165.1
Expense Report Status             732164.1
SLA Accounting Attributes Setup     942650.1
SLA Setup                 942252.1
GL Transfer                 878891.1
Budgetary Control Setup         942232.1
Budgetary Control for Payables Invoices 979855.1
Encumbrance Health Check         975072.1
ZX Tax Setup                 462877.1


Thanks
Lakshmi