I frequent a audio forum for home theater and 2 channel stereo enthusiasts. A lot of guys there are really into Porcupine Tree and Blackfield. Any ways I started really getting into Steven Wilsons work, and every now and then the name Opeth would pop up in interviews I was reading or forum posts. I semi-checked Opeth out, but the growling would get in the way of me ever expressing interest. But again I kept seeing Opeth's name connect with Steven Wilson.
I did an Amazon search and found out about Damnation. Bought it and was immediatly blown away. What really got me hooked though was Lopez's drum work. All I could think was, "How in the hell can a guy that plays death metal turn around and percussion something so beautiful!" So damnation sat in my cars CD player for about 4 months of pretty much non-stop play.
I then decided to give the "harder" stuff a try again. I bought Ghost Reveries, and this time I was more prepared. I still had a hard time focusing during the growl sections, so I started listening to Reverie/Harlequin Forest over and over, and Mike's vocals finally became more clear to me, and how the "growl" really fits into the whole scheme of what Opeth is doing. Once I got that part of it, the rest of it all came together.
Then I bought the Lamentations DVD, and was blown away by Deliverence, Leper Affinity, Drapery Falls, and Masters Appentices. Now I am hooked for life. Thank You Opeth!!