Yes!! Totally underated. I remember back in '92 getting slagged by mates for listening to a death metal band that had keyboards That album and "The Horror of Science" demo are killer. Thresholds has some good songs but is completely inferior to The Key. The last album was complete balls though. Check out Incubus if you love old school Morbid Angel/Nocturnus/Mike Browning stuff.
Tarb: Gotta agree on Thresholds, it's pretty weird stuff. It could have been a lot better with a producer working out the song structures... they are all over the place.
Some really cool moments on it though, like the beginning of Tribal Vodoun.