gsa ser VS pbn links to parasite

hello to anyone familiar with parasites what you think is better?

Those automated links used to work great in the past, but it seems that either those links have been severely degraded, or the number of sites that allow posting has decreased significantly over time, thus, the link juice from software is now almost none-existent. PBN should serve great, but acquiring a huge number would be expensive.

PBN links are best

WTF is a parasite?