I personally recommend Amon Amarth's "Once Sent From The Golden Hall".
Johan Hegg delivers two styles of vocals and sometimes intertwines his screaming with growling, like in the third track, "Without Fear".
The album shares many characteristics with subsequent albums such as "The Avenger" and "The Crusher". However, in my opinion, this album simply has the best contrast between the almost happy riffs and the brutal vocals, while "The Avenger" has a darker tone, and "The Crusher", weaker recording quality.
"Once Sent From The Golden Hall" is also Amon Amarth's debut album, after three demos, one being released under the name of "Scum", and one EP.