I don't understand why everybody soils their sheets over The Grateful Dead. They are a psychedelic version of KISS - big image and mediocre talent (sans the Stanley/Simmons PR freak show). Track for track, album for album, concert for concert, The Grateful Dead are nothing compared to Jefferson Airplane. Garcia couldn't hold Grace Slick's jock. Obviously, I'd get in the sack with Slick before Garcia - that's a no-brainer - but I'd also hop in the sack with Kantner, Kaukonen, Casady, and/or Balin before I even so much as lit a smoke for Lesh and Hart. The latter are goose-eggs if you dig it.
And for all the "hotshots" out there, don't give me any of that "We Built This City" crap. Different personnel, different band, different era. Jefferson Starship's 1970 album "Blows Against The Empire" blows everything The Dead ever recorded out of the water.
Of course, more selections for iTunes is great no matter the artist.