Take the first review with a pinch of salt - it's not ALL bad. Yes, there are certainly plenty of 'empty disco' mixes. Difficult to define but instantly recognisable, with lots of twiddley bits but zero soul, rhythm or emotion. Heaven 17 kicks off with a 'natural' extended version, i.e. once heard it's the 7" mix that sounds odd and strangely truncated. Talk Talk's 'remix' is the widely know extended mix. Beyond the new rhythm track, Vicious Pink's mix doesn't add anything notable, so you're better off checking out the original 12" mixes. Grace's LL mix is another widely played club version at the time. Audibly, Inner City's mix actually sounds retrograde as if recorded around '81-'82, compared to the original (Saunderson) Chicago sound that came a few years later. Despite big names the final 4 tracks on disc one are pretty superfluous.
Disc 2 is less noticeable overall, with nearly all the mixes being of the type that enable beat-synced mixes in long sets, so only copping a minute or two of vaguely recognisable pop hit in a club environment. Not pleasurable or really intended for 7 minutes of continuous listening. An odd collection, but usefully available as individual downloads.