Go to the Pit in the Tamoe Highlands......drops there are insane. It appears you can get pretty much anything in the game, as magical crusader bows, diadems, champion swords, conquests swords, etc were dropping. As a note, in 4 runs I found the HellRack Collosus Crossbow and various set items (like Sanfers wand, gloves). Its easy to find, just take the outer cloister wp and follow the road to the Pit. It's fairly easy to clear and the drops are amazing.