Gee the old lop OR rop argument (debate)...... read the FM,POH or Lyc or Cont, recommendations. pretty simple.
Not really interested in rehashing the old debate.
Just wanting to find a LAME with a borescope! (Read TCM SB03-3 - pretty simple, too!) Preferably in WA!
Ideally with an ability to interpret engine monitor data!
(An open mind to LOP operations a bonus
)