This is probably the best set available for this part of the Himalaya. Not so much for trekking but good for trip planning. Sturdy paper and all the names of towns, gonpas, topography.
Would have been useful to have driving distances in km, but in this area kilometers don't mean much: mudslides and floods slow you down so much that time and distance don't always relate to each other! 1:200.000 scale should satisfy most travelers.