Yes, I do. My Opeth collection is absolutely silly. I have two (original) copies of every album + the re-issues, plus a special version of each one (tin, digipak, 2CD, etc.). I've detailed it somewhere before.
Despite that, I'm also realistic enough to admit that Blackwater Park is not a great album, though good and that Opeth isn't flawless. Regardless, they're probably my favorite band, though The Project Hate offers heavy competition alongside bands such as Agalloch, Vintersorg, Borknagar, etc.