What is the best amount of memory for ssd - 1tb or 512gb?

Question

Solid State Drives

What amount of memory is better for ssd - 1tb or 512gb?

I now have 1tb hdd, occupied where ~120-150 gigabytes)
Simply, it’s already gone to 3d + application development, web (xcode, atom, android studio)

Do I need 1tb for 3d or for video editing for example?

Editing is probably for me Adobe premiere
3d is Blender
Ps, Ai

Upd:
Editing is not so important for me, it's more of a rare occupation.
Important about the external drive.
I thought to take 512 GB and plus an external hard drive of 4 TB (hdd). But I think it will be inconvenient to constantly pump, what to do?

Answer 1

If there is an HDD, then you can take 512 SSD.
If there is no HDD, then it makes no sense to take less than a 1TB SSD

Answer 2

It is desirable to have enough space for installation. Since raw sources will be stored on the disk, which can take up a lot of space. Here I would also advise you to immediately think over a system of duplication of information.

Answer 3

Nobody bothers to put programs on the HDD. Yes, something will still be put on the system disk, but there will be, basically, user configs.