I suppose I fall into this group too. I consider them my second or third favorite band (probably third, behind Blind Guardian and Katatonia), but I don't listen to them that often. I DID listen to MAYH the other night, because I was feeling something that requires that album (namely, bitter want for a certain girl), but before that, I hadn't listened to them for a while. I've been preoccupied by black metal and its various offshoots lately, like Emperor, early Ulver, Borknagar, Vintersorg, Mayhem, Immortal, Blut Aus Nord, Enslaved, Satyricon... you get the idea. Also, I've been on a Blind Guardian craze lately (my favorite band, but I don't listen to them THAT often). Well, I DID listen to To Bid You Farewell yesterday morning. So lately, given my current situation, Opeth has been getting more listens, but before that, not much.
Ryan