Sidster is right.

Prithivi Naryan - An excellent Monarch, visionary, ambitious, smart and brave

Mahendra - Smart, good politician, had some economic vision, played China Card very well, ambitious.

They were the two (and only two) great kings as well as leaders of Nepal.

Most of the people say Birendra as a great king. But I like to say he was good king but not great leader. He ruled country with direct power for 2 decades and with indirect power for 1 decade. But did nothing, no progress, no vision, no development, no long term plan, no utilization of resources. If there was some visionary leader for 30 years Nepal would have been very much developed.