For fans of both Joy Division and New Order, this is an important album as it charts the territory after Ian Curtis untimely suicide and before the superstardom augured by Blue Monday. It ranks as my second favourite LP by the group after Power Corruption and Lies. (If you're new to NO, I'd recommend buying this and Power Corruption and Lies rather than Substance or any other compilation -- those 4 CDs contain essentially all the most important songs the group produced IMHO, though you might also buy the remastered Low Life too.)
Contrary to some of the complaints on this site, I must congratulate John Davis for a great remastering. I own an original Factory LP of this, which I bought in 1981, and I'm playing it (on my Pink Triangle LPT, with an Ortofon MC30 cartidge) side by side with the CD (which is on a Rega Planet) and the original, which is in mint condition, sounds really rather muddy by comparison. Definitely worth buying this rather than the earlier non-remastered CD.
The bonus CD is a nice addition. I agree the remastering is not as clean as for the album and it would be depressing if the original masters have been lost. But it's great to have the 7" version of Temptation, with its guitar flurries in the intro (I only have an original 12" ...)