I have several retainers now at level 80 with my main character and two other characters which are now members of GC's and in the process of leveling up retainers as well.

My goal with all these retainers is to get them to level 80, equip them with the best gear, and then use them to make gil. (I want to save up enough gil to eventually buy a nice (ie expensive) plot of land).

What experiences do you have using retainers to farm gil? Are some types of retainers better at it than others? What are the best types of missions to send them on? Does the absolute best gear (lvl 80 HQ melded gear) make a difference?

Thank you for your help!