This is definitely a sweet deal for those that need the instruments and like the Beatles. I haven't played any other GH/RB games, but I'm enjoying this one.
Also, while I can't compare the instruments to anything else out there, the reviews I read generally said the drums are just RB 2 drums, the microphone is standard, and the Hoffner is generally high quality but is a bit longer and thinner than the standard, so those with shorter arms may find it less comfortable. Again, just repeating what I've read.