Oh, sorry....I meant Phy Graf is my fave Zep, not ever. I don't know if boring is necessarily right. It's just I listened to them so much when I was younger. Of course, there are other bands the same. I listened to albums like NIN DS, or SP Siamese Dream/MCIS, or Floyd's DSOTM ad nauseum in my youth but I still come back to those.
I won't denigrate Zep as a whole but just my own listening habits make me unlikely to put on, say, Zep I or II. They were doing what they were doing excellently - but it doesn't excite me the way it used to. It holds its place in the rock Mt Olympus for a reason; I just don't pray to those gods anymore.