I have been having much better sucess with Thresh Socket runs then I ever did with meph. He doesnt drop as many items but he can drop any item in the game and he is easy as hell for a sorc to get to. My MF is about 600.

This weekends finds:

125% ED Schaefers
Mav Armor x 3 (finding a ton of these lately, very weird..)
Stonecrusher Leg Mallet
Unique Feral Claws
Unique Balrog Spear
Marrowalks x 3
And lots of other fair to middling stuff.