Eh, I think Heritage sounds very much like Opeth and to me has even more of a classic vibe than PC does. It was more in the atmosphere though than it was in the actual music; PC has more guitar tones and instrumentals that sound like Opeth to me, but Hertiage gave me more of that old-school feeling, if that makes sense. Don't get me wrong, there's moments on PC where I immediately flashed back to an older Opeth time (a few beginning guitar lines in Elysian Woes and Cusp of Eternity, bits a pieces scattered throughout other songs), but overall I think this is the album where they're starting to carve out a new sound. Again, just what I hear and it's great that Akerfeldt has created an album that has got so much discussion going about past, present and future.