If you like your GH then get this as it is the best so far (also see my GH Van Halen review). I bought this not really knowing much of the music from Metallica and have 2 boys who had not even heard of them. But now it's the most played GH and we have all of them on the Wii. It's no contest if you're into GH then this is a must have.

in my opinion this is the best guitar hero game so far and im not a big mettalica fan but these are the kind of tracks guitar hero was made for very hard rocking great tracklist not to mention the epic mercyful fate medley a truly awesome track

It's hard work compare to the other G/Hero titles though - some of the songs are long and it's a killer to keep concentrating (for me anyway - must stop playing at 2am !!). You have to be a fan - but playing along to the Metallica stuff is just fantastic.