I'll have to admit to coming to Orange Juice rather late (and primarily via the Edwyn Collins solo route). OK, I was aware of Rip It Up, but looking at the dates of these recordings, it seems that OJ had (arguably) already produced their strongest material at the time of RIU's release. This album contains some absolutely 'back to basics' classics - raw (almost amateurish?) playing at times, but backed with a great sense of melody and urgency. For me, this album is the Orange Juice equivalent of what Rocket From The Tombs were to what eventually became Pere Ubu (though musically there is no similarity, of course). It's interesting to know that the Velvet Underground were one of Edwyn Collins' biggest influences, and whilst this may not be immediately obvious, if you listen to the guitar sound on Satellite City it is straight out of the Velvets' song Rock n' Roll.
It is a great grower of an album, but favourites for me are Blue Boy (of course), Poor Old Soul, Louise Louise, (To Put It In A) Nutshell and the Vic Godard-penned classic Holiday Hymn. Really essential stuff.