I loved this album, but do not listen to it as much as I should (it is the only of their albums that I own). I think what made it so enjoyable for me was its blend of aggressive speed and heavy, deliberate, and slow passages. You forgot to mention "To the Death's Head True" - one of their best songs (in my opinion).
Despite this, I agree that Frontschwein was their best work. So many amazing riffs, and simply phenomenal vocals.