Perhaps Big Five knows Africa, but they certainly don't know Asia. I just returned from a high-end private tour to China and India with Big Five and it was a disaster to say the least. Our guides were very inexperienced and spoke very poor English. We had a list of must-dos and must-sees and our guides made no attempt to make these items happen. Big Five did a very poor job of communicating our wishes and clearly hired the cheapest guides possible while charging us thousands of dollars a day for their services. Would recommend using A&K or another operator in Asia.