I went through all of the new loot items and compared them to the old ones to come up with the Top 8 loot you should be trying to get 500 of (1). Kanu Warriar, the creator of group Mafia Wars Gods!!!, did much better and made 3 charts outlining the top 8 loot items. Attack items are on the left and defense items on the right and are in order of Weapons, Armor, Vehicles and Animals. Where to find them can be found on the left and right of each column. Great job Kanu!
Top 8 Job Loot
Top 8 Jobs and Fighting Loot
Top 8 Job, Fight and Fight Club Loot