when i first got that cheap seedbox, i did some testing with torrent with a lot of seeds.
if i remember correctly, the hard limit was 12.2MiB/s to download a torrent to the seedbox.
most of what i watch, i watch one and then delete it.
if i want to keep something, i download it to my home server.
so 600GB seedbox is enough for me.
as i need a home server anyway, i prefer to spend money on hard drives, not on a seedbox.
for example, whatbox is $348/year for 4TB.
whereas for my home server, a good quality 4TB hard drive is $90.
i used raid5, so 3X4TB is $270 and get an usable 8TB of storage.