There are about 3 tracks I like on this CD; 'Casino Queen' (sounds like a very raw RnB 'Stones song w/ humorous lyrics) , 'Passenger Side' (uniquely Wilco)& the very last track (reminded me of the admirable Bob Dylan). They are all good songs and there may be others that I have overlooked because, in truth, I got bored with the other songs and found myself flicking through them rapidly. I have the recent album 'YHF' and it is really quite good. I also have the Mermaid Avenue releases and I think Wilco really shine on those. Woody Guthrie's lyrics must have really inspired them. 'AM' sounds more like standard 90's 'Indie' pop by a band with genuine promise (which they have fulfilled to a large extent on YHF) but not deserving of the high praise it received in many reviews. On a personal note, I detest it when performers appear to write 'hip' sounding drug references into their songs and Jeff Tweedy does seem to have a penchant for that, whether intentional or not. Perhaps it's just the way I hear it.
Anyway, my recommendation, if you have limited cash to spend, listen to the Jayhawks first, and then decide. Compare the song 'Ain't no end' from their early release (which happened to have been compiled from a bunch of demo tapes).
It has that certain [I know not what] that Wilco, on 'AM' threaten to capture, but don't quite manage.