I went with a 6 here.
The two studio tracks sound pretty darn good, but not stellar. And there are only two...
The other material is somewhat interesting, from a historical perspective, but not inherently. I probably won't play this again.
Sound is very uneven, given the vastly different sources. It's cool they included an extra disc, but it's just lacking in interest.
The booklet is nice.
2 more votes needed!