I never saw the Dead...I tripped through the crowds and had a time whenever they were in my neck of the woods and I saw a Jerry show one time in CT in the early '90s.
Although I didn't follow them and whatnot I have always loved them. I don't listen to them much, though, because I like to save them as a treat. Like today. Yesterday I picked up a clean copy of Europe '72 yesterday and I played it for a while until life made me go and do other things.
I am listening to it now and I gotta say -- OMFG the Grateful Dead are about the awesomest band ever, just as I always suspected. I am metal, jazz, blues, soul, funk... all day long. But, if it's a choice between Zeppelin or Sly and the Family Stone or Muddy Waters and the Dead, I am choosing the Dead. There is just something about this meandering country-folk-rock that kills everything else. There is a ton of love coming from every note. There is an "I know, dude" about it all.
The Dead isn't for everyone, I know. Pffft, too bad for them
As for this triple album - meh. The music is, of course, stellar, but the vinyl is loud and the songs don't have much in the way of crowd noise between them at all. They just picked tunes from the show, or a series of shows, and slapped them on an album. This is why I would much rather just download a show from archive.org and hit play one time.....
The Dead - it's a state of being more than a bunch of notes.