First, the production is kinda odd. It lends a heavy but slightly hollow sound, which makes the album sound less heavy than it ought to. I can only think of Saint Vitus' 'COD' as a comparison; the sound's not bad, but it just doesn't sound quite right for this band.
Next, while every Penta-album tends to be compiled with songs written over several decades, 'Be Forewarned' has a more pronounced 'patchwork' feel to it. The songs do not flow together very well, and it's understandable when you look at the writing credits and song histories. You've got about 4 songs that date back to the early 70s, 4 that are from their early DEATH ROW years, and 4 new tunes, at least 3 of which were written by Victor while the band was on hiatus between '88 and '93 and weren't really intended to become Penta-tunes. The album also ends on an odd note, pairing up an accoustic instrumental (!) with 'Be Forewarned', a song dating to 1972 that, while good, is a rather sleepy number and makes the album end with more of a whimper than a bang.
Yet the album is far from a lost cause, as there are a lot of killer tunes on this one. Three of Victor's new tunes ('Vampyre Love', 'Too Late', and 'Wolf's Blood') are killer, heavy stompers. You also get great Death Row-era tunes in 'Live Free and Burn', 'Petrified', and 'The World Will Love Again'. And even the vintage 70s tunes offer up the geat 'Nightmare Gown', which sounds very much at home alongide here. They actually do a good job of heavy-ing up all the vintage tunes on here, though 'Ask No More' was never afavorite of mine; it and 'Frustration' still sound dated here despite their doomy upgrades.
So in the end I gotta say the album has its flaws, but it still offers up at least 7 great doomy slabs to shake your brain.
On a slightly related note, a Penta-nerd confession is in order: at the bottom of the Acknowledgements page of my doctoral dissertation I added the line, "And of course Blue Cheer". My professor either never read the dedications or just decided not to ask, so my little homage is immortalized in the annals of science
