"Then why do you choose Prachanda?"
I didnt.
"I'll take Pinochet over Allende. I'll take Fujimori over the Shining Path."
There are better examples to find than any of those you cited if only Nepal choose to look at India.
Personally I prefer a progressive pro-reforms (preferably a Hindu) party to come to power.
If you support the overthrow of the king, then you want what the maoists want and are on their side.
Nepal is the only officially Hindu state in the world and the king is a Hindu god.