Originally Posted by sisophous
not a single person on that Amazon link made any comment about them specifically as to what they did not like about the double sided discs.
A few possible drawbacks:
The adhesive used to hold the two sides together was problematic on some Hollywood releases and could potentially be much worse with cheaply made consumer recordable discs, which are often dicey to begin with. If the sandwich is made with poor alignment (very typical of Memorex), it multiplies the chances of random recording failures and compatibility with playback gear suffers.
No decent way to label the disc contents. Granted, you may not care, and would be happy to just slap a post-it note on the plastic storage case (or write very tiny in the miniscule hub area available for labeling). Most people find that a bother, keep several loose discs sitting around the coffee table, and need to identify them at a glance.
Both sides playable means both sides require more careful handling. An issue for some users: twice the risk of scratching or other damage.
Maybe too obvious, but since no one's mentioned it: no real advantage for consumer use. Unlike the old laserdisc players, no DVD players or recorders have been sold with an automatic side-flipping feature. The reason many people flock to the flakey but commonly-available "dual layer/single side" blank media is to gain the combination of nearly double the continuous recording time without
having to flip it over or change between two single-layer discs. Dual-layer/single-side can be crucial for those who don't have an HDD in their DVD recorder: recording direct to disc you would need the DL technology to cope with long movies or sports events. But dual-side flipper discs would not help with that issue, and don't really save much on storage space: you can easily buy slim DVD cases that hold two to six discs in the shelf space of a single standard case.
There are recording, compatibility, and archival questions plaguing dual-layer
recordable media. Dual-sided
recordable discs would (or did) likely have similar problems. Hollywood gets away with it because the disc data layer is pressed, not burned: it gives them more margin for mfrg error. And even Hollywood hedges its bets: you'd be surprised how many TV series were released dual-sided in stores but re-done exclusively for Netflix as single sided, because NetFlix reported too many rental compatibility, playback, and fragility problems. Double capacity recordable discs are a nice idea but hard to pull off with both economy and