Maybe they could use another 'drug filled haze' if this is what it produces.I voted for Snowblind, but Wheels of Confusion comes close. This, like Sabbath Bloody Sabbath, is not one of their best albums, but it does contain some great tracks. I have heard the band say in interviews that Vol 4 was recorded in a drug-filled haze, hence the lack of imagination in the album title, the tired material and the filler (FX).