I couldn't decide really. Off top of my head some favs today include:
Chasing Fear
Return To Serenity
Time Is Coming
Do Or Die
Riding The Snake
Hatred's Rise
As The Seasons Grey
The Ritual
One Man's Fate
My favorite testament song is down for life .... it's the right headbanging song!!!!
For me "The gathering" is THE ALBUM!!! but others as "electric crow" or "the new order" remain exeptional....