I was EXTREMELY surprised, in the best possible way, by this one from @Dr Bonkers :

https://www.drbonkerssoundlab.com/p...ume-a-jmld-4x14-guitar-cabinet-ir-collection/

Surprised because it's a full-size pack for all of $0.99, and to my ears they totally hold their own against Ownhammer, God's Cab, Kazrog, and others. Very curious to try some of their other IR packs.

(Full disclosure: I have no affiliation with Dr. Bonkers whatsoever, apart from enjoying the hell out of their IRs.)