Was it an extract? Interweb said 20-26% THC. But 48% makes sense if it's some type of extract.

I once had ATF shatter, it was only once but I still remember the high because it felt so amazing.

Out of what I have now I'd say Farm Gas (28% THC) is similar and LA Confidential is a lovely pure indica for the night. Both hit almost as hard as flower as most of the shatter I've had (except ATF).