I'm sat here by the lake with a thought or 2 running through my head.
Shelf lifes are more instantly attractive than freezer baits, but freezer baits on day three seem to offer more natural attraction as the enzymes kick in or out.
Years ago Brian Skoyles wrote an article about it, and Gary Bayes has mentioned the instant attraction of shelf lifes vs freezer.
To me shelf lifes are better in small quantities, even food baits, a tiny percentage of the freebies mixed with freezer baits, or as a stringer of baits around the hookbait. The hookbait itself can be a shelfie, but you do not want massive amounts of shelf life freebies.