"Empire" is one of Queensryche's best albums, probably second only to the classic "Operation:Mindcrime". It's a lot more patchy than "Mindcrime", and is a collection of individual songs rather than a single concept album, but some of those songs are superb. "Silent Lucidity" alone is worth the price of admission, and "Best I Can", "Another Rainy Night" and the title track are all superb. Some of the lesser tracks tend a little towards filler, but the good stuff on here is really good.
This 20th Anniversary Edition is a cut-down version of the lavish package being sold in the US - you lose all the nice packaging and artwork, getting just the two music CDs and a booklet which seems to be pretty much the same as that supplied with the original CD release (not the 2003 remaster). The first disc looks and sounds to be the same as the 2003 remastered version, with the same three bonus tracks ("Last Time In Paris", "Dirty Li'l Secret" and the cover of Simon and Garfunkel's "Scarborough Fair".
The second disc is a live concert recording from London in 1990, featuring a lot of the "Empire" tracks and a few oldies. The main reason for buying this is if you already own the Deluxe Edition of "Mindcrime" that was released in 2006 - that included a disc with a complete live performance of "Mindcrime" from London in 1990 - and yes, the disc in here is the other half of the same show; if you get both deluxe versions, you have a complete show from the "Building Empires" tour. (Hint - to listen to it all in the right order, make a playlist which inserts the "Mindcrime" show between "Roads To Madness" and "Silent Lucidity".) The sound quality on this disc (as on the one supplied with "Mindcrime") is a little disappointing - it's better than the average bootleg, but it's pretty poor for an official live recording, with quite a lot of distortion, a fairly muddy sound and very compressed dynamics.
Overall, therefore, a good buy if you don't already own "Empire", but it's rather expensive for what you get. One for the completeist rather than the casual fan.