The Ring of Free Action, Ring of Gaxx, Ring of Acuity and Ring of Wizardry all come to mind. As for staves, yes, the Staff of the Ram has no peer, though SotM is still one hell of an item.
It also depends on if you're soloing or not. If you're soloing as a sorc, you'll want that Ring of Free Action on at all times. If you're in a party, you'll want to give the rings of Wizardry and Acuity to other party members... Sorcs can cast enough spells, and you might want to level the playing field just a bit. But that's just personal preference.
|