BLS is one of those bands that if you own one of their records, that all you'll need from them. Personally "1919" or "Mafia" is all you need. Zakk sounds too much like a second rate "younger" Ozzy and while he's a great guitar player, all of his riffs sound the same in BLS and the "squeals" on the guitar?
Well, a little of that goes a long way... Live I have heard they are good, but that's because they bring out all the best material...