If your needs are really basic and you leave in a Low Density Residential Area take the $60,
If your are residing in single house in Medium Density area take the $65
If you live in a Condo or Apt. house take the $70.
Why?
Almost all the numbers stated in Internet and Networking are not real functional Numbers. They are the core number of the systems. E,g, 400 mb/s does not represent the environmental lose in the way to the customer and his systems.
Or/and the loses of speed according to the load of use in your "neck in the woods" during "Rush Time".
The Speed statement usually indicates the speed that the ISP pump in their centers,
As an example, I have 1giga in NYC. The only time my Internet reflect real 1giga agility is between 1am and 8 am.
I also have a second Location in a very rural area. The max speed provided there is 200 mb/sec.
The 200 mb/sec present constant and more agile service than the 1 giga in the city.