ZMI starts breaking even about level 65, you lose money before that and you start gaining money after 70 or so... ZMI is usually a money loser or very low profit (70-91 only gets you about 5m), if your looking for profit rc nats or laws... Here's a good guide, viewtopic.php?f=180&t=767262&hilit=zmi You can do the short method, the long method is for pures, or other people like that... The armor that I use is a bearhead, varrock armor 3, larupia legs, spottier/spotted cape, boots of lightness, sara book. Basically you try to keep your weight as low as possible while maximizing mage def.