The album released in 2003 you listen to most

hmmm, toughie...I suppose i've devoted the most time to;

Blood Red Throne - Affiliated With The Suffering
Soilwork - Figure Number Five
Avulsed - Yearning For The Grotesque
 
Hate to be cliche, but Sweden has put out my two favorite records this year.

The Haunted - One Kill Wonder
Soilwork - Figure Number Five
OSI - s/t (Did this one come out this year? I think so. That album is amazing!)
 
I guess the 03 albums that I listen to the most would be my current top 5:

Enslaved-Below the Lights
The Gathering-Souvenirs
Vital Remains-Dechristianize
Green Carnation-A Blessing in Disguise
Naglfar-Sheol