Best tire brand for motorcycle?
Totally depends on what bike you have and your riding style. I have used Metzlers on some motorcycles and really liked them. They suck on the bike I have now. Right now I ride a Kawasaki Vulcan 2000cc, and I like Bridgestone. But next year there might be something better.
The best tires for a street motorcycle are Dunlop or Pirelli tires, personally I prefer Dunlop.
There is no best brand. There are many manufacturers of motorcycle tires and they each have their own strengths and weaknesses. It's up to you do decide what you're looking for the most from a motorcycle tire and, after checking out reviews and recommendations, decide which tire is the 'best' for your motorcycle and riding style.