Japan: What is the most picturesque train route between Nagano and Kyoto?

We will take the train between Nagano and Kyoto in a few weeks. It seems that there are two options:
– Nagano to Nagoya, then change and follow Kyoto (we will do this part in reverse a few days later on the way to Tokyo).
– Nagano to Kanazawa, then change and follow to Kyoto.

Both take about four hours and are included with our JR pass. As such, the tiebreaker could be the sight. What is the most picturesque route?