It is very tempting to give this album 5 stars because I am such a huge admirer of The Smashing Pumpkins, but it is not what I would consider a 'true classic' that full marks would suggest (it is only a B-sides album afterall), but that means in no way it is a bad album. Many of the tracks are taken from the early days of the Smashing Pumpkins, songs that have been lost and then found, and some that were before now, very very rare.
The album sleeve is also a great piece of Pumpkins history because inside is a long passage written by Billy Corgan himself, describing how each song was recorded and how the ideas of each song came about, which is fascinating when listening to the album.
If this is the first Smashing pumpkins album you are thinking of buying, then I suggest to get their recent best hits album 'Rotten Apples' or the legendary 'Siamese Dream' or 'Melon Collie...' to get familiar with their more accesible songs, and then move on to this album along with other later albums such as 'Adore'.
This is a beautiful album to really listen to, it is definitely not background music if that is what you are thinking of buying it for. The songs range from loud to quiet, with intricate guitar work and pounding drums. If you are already a fan of the band then do not hesitate in buying this gem of an album, it is a collection of B-sides that easily betters many bands studio recordings.