Actually you could be more efficient by 2 hours.
3 programs are 1 hour each = 3 hours
1 custom with 3 core is 1 hour = 1 hour
3 -1 = 2 hours
So in 1 hour I would have my listening done for the day.
If you continue to listen to 3 programs instead of buying a custom, you’d save money because you might already have what you need. A custom would allow you to have something name embedded with additional modules you might want.