After what seems like an eternity in Conakry, eating at just five or six just tolerable places in rotation, I'm going to a conference in Joburg and I only want to eat the very best, most delicious food in town while I'm there. No particular preference on cuisine. Money is no object, though if you think the greatest food in Joburg is at a cheap sandwich place I'll be thrilled to eat that too. I'll be based in Sandton and won't have my own wheels, but if it's cab-accessible that's great. Thanks in advance for your recommendations.