After extensive research, I have narrowed down to the two above-mentioned tours. While Pablo Tour is semi-private, it is two times the price of Kilawasi Lodge Tour. They also charge extra for transfer from Puno to Chivay (which is funny because the actual tour bus is $50 but Pablo Tours is charging $55...). This is like a once in a life time vacation for my parents and they would like the best experience. I've read many reviews for both. Has anyone done them recently or know which is better than the other? Is Pablo Tours worth the extra charge?