i own the Classic Records 45rpm box set. I also own most of the Classic Records LZ 33rpm versions. i don’t own any true original pressings but have heard a few. and i own 3 15ips 1/4" low gen master dubs of LZI, LZII, and LZIV too.
the 45rpm LZ box set is my most prized and cherished thing in my music collection. if you are a fan then it will sweep you away compared to other versions. lower noise, more dynamic, more detail, the music leaps from the grooves. a force of nature.
of course, the tapes are even better.
the 45rpm LZ box set is crazy money, but in this case, worth every penny if you are a significant LZ fan and have a good vinyl front end to enjoy it’s magic.