In any case, I believe that many of us have the set, and at least I haven't found a defect in any of the discs.
FWIW, Discogs is listing SID code variations, indicating that there was a repress of the 1995 set. An interesting sidenote is that mould SID codes were introduced in 1994~1996. This means that discs that lack such SID codes were produced no later than 1996-ish, unless there has been a one-off mistake (or they are counterfeit). But looking at these SID code variants, it appears that all discs within the set have one variation without SID code (presumably the initial pressing) *except* discs 4 and 5. This suggests that these two discs were pressed in a separate run (while it might still have been as early as 1995).