I've really been grooving on this new Jayhawks anthology. The deluxe edition is definitely the way to go. The first disc is the "North Country" hits collection, featuring pretty much all of the best loved Jayhawks songs, including "Blue" (my fave). I already own most of the band's albums, pre- and post-Olson, but this is a handy way to get so many of the tunes I like all in one place. The 2nd disc is an assortment of b-sides, outtakes, radio performances and the like, many previously unreleased. The songs are nowhere near as great as the "hits" on disc one, but they still make for some pretty good listening, and hearing them appealed to the collector and curious fan in me. There's a lot of loose and sloppy (fun) stuff on disc two. The third disc (DVD) is a mildly interesting set of music videos plus two EPK's (electronic press kits), featuring interview footage, live performances (ex., SXSW 97), and other miscellanea.
Hearing this music again (disc 1) or for the first time (disc 2), I was struck by how the Jayhawks are in some ways an original and authentic sound, but at the same time, how much they owe to country-rock predecessors like Richie Furay-era Poco, Flying Burritos, etc. The early-Poco similarity was especially strong on many songs. And some of the material on disc two veers pretty strongly into traditional country territory.
One final note is that a "big box retailer" is selling a version of this deluxe edition that has a FOURTH disc of rarities, an EP containing five cuts, live songs and outtakes, all but one previously unreleased. If you get that version, it's just about like getting a Jayhawks box set.