I like them because they mix calm and hard music in one song.
It's little bit funny because 3 years ago I said I hate growl in metal music. They changed my mind, it's not so bad
My fave albums are Damnation, Watershed, Blackwater Park.
I love The Lotus Eater, Harvest, Closure, Burden ... and probably more but I didn't listen to all discography yet, 4 albums are waiting for me.