Best tire company all around?  Michelin, that's pretty easy.  I like certain tires from other companies like Toyo R888's I love, I like the Falken 453 if you want a good budget tire as well, and I love the Yokohama AD08 tire too.  But for an all around tire that I want to use every single day, nothing beats the Michelin Super sport, and for a hardcore track tire too, the Pilot Cup Sport 2's are pretty insane as well.