I booked the Base Camp Everest trek with NST this month. Unfortunately due to weather conditions we had to cancel this and did the Anna Purna circuit / Thorong La Pass but Ram and Basu catered for this excellently. From the airport pickup, they waited nearly 3 hours as there were huge queues for visa's to organising the itinerary they were very profressional. I can't say enough about our guide Dil Gurung, he was extremely professional and looked after everything very well. He has been with NST for 5 years and has done both Base Camp and Anna Purna many times and is very familiar with the guesthouses and always chose somewhere good to stay. All in all if you are interested in doing some trekking in Nepal I can only recommend Ram, Basu and Dil to look after your needs.