I've tried
Tatler and
Harvest Guard when regular lids were unavailable a few years ago. There are minor
differences between Tatler and Harvest (thickness of lids, for example), and there are a number of youtube videos explaining the differences and why people prefer one over the other. There are also lots of videos demonstrating how to use the lids.
I have had a 100% success rate with the Ball lids, in both water bath and pressure canning. My success rate with the resusable lids has been significantly less. Maybe 80%. I am not sure if I do something wrong, since I have little experience with them, or if the lids themselves are problematic. I would guess that
I am the problem, though, not the lids. Nonetheless,
I am not alone in having a lower success rate with the reusables. The
procedure for using them is quite different from the Ball lids. Centering the lid and seal is critical. The process must be followed exactly. There is also talk about formaldehyde being present in the plastic lids. It is proposed the lids never get hot enough to leach, but not everyone is convinced of that.
I had one major problem with the reusable lids. I canned 17 jars of corn, and they ALL failed within a few months. Very discouraging. I don't understand what I did wrong. Perhaps I left insufficient air space. I tend to think they would NOT have failed with Ball lids. I believe the resusable lids are much less forgiving.
Since I already have them, I now use the reusable lids with foods that will be eaten within a year and items I don't value too much (e.g., jams). But if I preserve something expensive, valuable, or for the long-term, I use the Ball lids.
On the other hand, before the "corn" experience negatively affected my trust in the plastic lids, I DID use the reusable lids on some long-term foods. Those lids are still perfectly sealed, maybe 3 years later. Go figure.