that was fun.
Ok, maybe the burgle one too.
I feel like the other highly talked about ones (M21st, Ogryn) were more because they brought a much needed change (of any kind) to the gameplay and the Ogryn was shortly after the bestiary penances, so it was a huge boon (for reapers especially).
Inferno was…mid? Just ok, imo.
Skulls was so fun and gave me such (unfounded) hope that we could get a Havoc-lite auric modifier. I only have myself to blame for going down that path to disappointment.