@MAC_32
Fair, and if you don't listen to metal too much, I am not going to try to sell you too hard. Maybe I mistook you taking SoaD, etc as that representing a larger % of your listening.
I was thinking about how to sell you, and about the only way that popped in my mind is that I can pretty much guarantee it's not what you are imagining in your head. I really like AllMusic's description of the band, which is:
Influential and acclaimed Swedish prog-metal outfit that deftly mixes death metal crunch with ambitious instrumental flash.
Now, the "death metal" part of it IMO is just the vocals that they go back an forth on for about 1/2 their albums. When I think of death metal, I picture an onslaught of growls and non-stop punishing music/double bass drums (like
THIS ). I was listening to their best known and rated album tonight, and if you take out the growling vocals, I am not sure if the music is even harder than Metallica - that's why I like that the description above calls them a prog-metal band first. The vocals are interesting and maybe is a bit like me and the country music discussion. I have gotten used to it, and when I put on that SoaD album, it got me thinking - why would Opeth's vocals irritate people more than this would? Hence my comment about them.
Anyway, if you do ever want to give them a try, I could give you suggestions or put together a mini playlist. Otherwise, I'll drop it and not turn this into a KP loves Opeth thread.