My husband and I chose Third Rock for this Lukla to Namche Trek and EBC Heli Tour - 7 days because we had already trekked with them to Mardi Himal. With that confidence, we flew to Kala Patthar, and it was the best holiday we could imagine. The trek from Lukla, to Namche, was a great experience. No doubt our guide was the best. Thanks to Naba for this itinerary!