Two very different machines, making very different juice results...

Blender mixes too much air in the juice, juicer machine is much better, this machine give the option, keep the pulp and fibre, add this to salad or cooking, and if there is no fructose in the juice, a green vegetable drink can be healthy.

And how much juice to drink?

Not all people can drink large volume green vegetable juice, some people with digestive system issues such as SIBO or IBS...

they have to start slowly with small amount of juice, and if no problem the next day,

okay then drink 1 cup of juice once a day, and if this not making problems, 2 cups liquid from juicer machine, not blender

More than 2 cups a day, not very logical because people can only absorb so much...