Personally, I find the CD a sow cool idea. On the one hand it is a best-of what would have been needed already at deadmau5 and on all tracks are selected carefully (only "Professional Griefers" I lack), on the other hand includes the second CD of many songs previously unreleased remixes. Thus, "5 years of mau5" also much more varied. It is a pity that not the ingenious original version of "Strobe" on the album, which is already simply become a deadmau5 anthem. Nevertheless, I can "5 years of mau5" recommend especially people who have deadmau5 rediscovered itself, as most fans know the best of songs, as well as die-hard fans will probably appreciate this album.