This album is one of the all-time greatest. Aside greatest-hits, I can think of only Michael Jackson's Thriller and Led Zeppelin IV that are even better.
And with good reason. The first 5 tracks, originally the first side of the first disc, were all big hits and great songs. The album also has a few older tracks, notably Jive Talking and You Should Be Dancing, both older Bee Gees hits. And it isn't all Bee Gees. You can find David Shire, Tavares, Kool & the Gang, and The Trammps. This is the record that got disco into the big time.
As for the tracks, they are all solid. Staying Alive opens the record, and it is a great song. Time wise, it is about a second or two shorter than the same song on the Bee Gees double Greatest Hits album. You will not find that 5 minute version of Night Fever--it runs 3'33. Of note, I have never found the 5 minute remix of Night Fever in any format, not as a 12" single, not as a 7" single, not on a remix, not on a Greatest Hits, not on older vinyl copies of Saturday Night Fever, not anywhere. If anything, those other records often chop a second or two off the song.
The other notable time is Disco Inferno by The Trammps. That is the final song on the record, and it runs 10'53. I got the original vinyl Disco Inferno record by The Trammps, and that song was about three seconds longer. Yes, you get the long version here--though it seems about half a second shorter at the end. The tape version, which I also got, had this song chopped about 5 seconds shorter than the CD (which had to be re-mastered to even fit on a single disc).
I can think of just one reason to not give this fine record a chance and see for yourself why it was the biggest soundtrack and one of the biggest all-time records. If you simply cannot stand disco, you probably will hate the album. But, if you never heard disco, of if you have heard mostly the lousy records when everyone and their dog wanted to try disco just before it fizzled, you should give this a fair chance. You might just find out what good disco really sounds like, and you might wonder how some of today's sanitized rubbish even qualifies as "music".
By the way, I also suggest trying out Michael Jackson and Led Zeppelin.