Personally, for me its luring.
back in the day, before the ditch and after, i was pretty good at luring, made over 300m at the time, but got keylogged and lost it.
Luring is more fun, even if you only get one guy and he only loses 100k, its still fun to do. Pking is fun and requires more skill, and people usually tele/run. However in luring they dont get the option; if you do it right.
Staking however is most profitable; but kinda requires luck.