GH4 seems interesting, but I don't like the idea of there being singing. I prefer the instrument based approach where it isn't needed.I have 4 stars on Jordan and 3 on Six xD also I have already passed TTFAF with 3 stars and on GH 3 I only need to 5 star Rainning Blood have 3 stars,and The Number of the Beast to have everything of the carrear with 5 stars.I've tried Frets on Fire, and don't personally like how it works. Rock Band to me is a lot easier guitar wise, than GH, and I'm hoping GH4 will counteract this with hard guitar/drum rhythmns too.