Is anyone here going to go with the 2TB option if that's available? I plan on using a macbook pro for massive amounts of video editing, but from what I heard, I should be editing footage held in an external drive, but not sure what the reasoning is for that. Did any of you ever struggle with space with the 1TB option?
Reason being is backups and archives. You should store your files on external drives, transferring stuff to your computer as needed.
However, with USB-C and the speeds it can deliver, working on larger files would probably be easier to use external. Only using internal drive for smaller projects. If it's just 3-5 minute videos you're making, 1TB should be enough as a working drive (2TB if you can afford it as files increase in size all the time). If it's longer videos then you might want the convenience of a larger internal drive, but you'd have to ask yourself how much you're willing to pay for that convenience.
Either way you'll end up with a lot of external drives for backups.
Edit: If 2TB drives are even an option... If they are no doubt you'll be paying a huge amount for it. Honestly, look at the file sizes of the project files you're working with. Double it to give you some headroom.