I am Australian living in Saudi Arabia, who visited Nepal March / April 2012 and recommend High Asia Tours most highly.
It is always a gamble to use an unknown tour operator with the only contact being via email, however I could not have been more impressed. To my relief I was met at the airport by the smiling guide Valmiki and my fabulous Nepal experience started from there. Valmiki kept me well informed and the driver Rajal kept me safe on the busy roads for the next 9 days. On my firstnight in Nepal Dave, the company manager/owner accompanied me to the Nepali cultural event which was most unexpected, however his company only added to the unique experience. The itinerary Dave supplied was interesting and varied and although it kept me busy it also allowed time for shopping. I would certainly recommend using High Asia Tours and if I planned to visit Tibet or Bhutan in the future I would use them again.
Australian Embassy Riyadh, Kingdom of Saudi Arabia