My favorite is

    /etc/cron.monthly/
    /etc/cron.daily/
    /etc/cron.hourly/
    /etc/cron.weekly/

Super simple to use - no remembering the order of numbers. Only one job runs at a time (so you don't need to pick times that don't overlap) Of course, it doesn't handle every case. I don't know if all Linux's have it.