Originally Posted by Ex Pres

Either the Park SPA-1 or 2. One of 'em has 2mm pins, the other 2.9mm. I used to use the HCW-4. Then I bought one each of the SPAs. MUCHO better.

And if you can get one cup off but not the other, then you need to use the Sheldon Brown cup removal tool. Bolt, nut, a few washers, all for <$4, and voila, you can remove anything.