Longtime fans may call this one a sellout but that is hardly the case. Instead the group has increased the bottom end of their sound and keeps the riff-per-song limit down to about two. This may keep Metallica from alienating staunch metal-haters but it is the quality of the songs - hits such as Enter Sandman and the ballad Nothing Else Matters but also Holier Than Thou - that has made this their most successful (and best) album to date. Certified at 12 million units by the RIAA. (2/01)