I have had a Digit for 4 years now, I think, and now also have a Hybrid.
I have posted in this thread before, but not too often because....well, at times it has become a bit of a shit show.
I do have some thoughts on the hybrid situation. If you think that any of them are in direct response to any of your prior posts, you are wrong. I am not picking up debate points from earlier in this thread, just sharing my POV which you may accept or reject as you see fit.
1. S&B are incredibly delinquent in making a formal statement acknowledging the problem and outlining their plan and time line to correct. To me, there is absolutely no mitigating factors....they need a public release...and it ain't happened.
2. Someone earlier pointed out that AL oxidizes on the surface almost immediately. This is absolutely true and true of many other metals also. But you can take ANY piece of non-coated AL, swab it with some ISO, and you will get grey residue.
3. After a couple of months of use, I did swab my rings and I did get some grey residue. Not a lot, but there.
4. I have no scratches or galling of the metal as another poster showed was happening to his. Just hasn't happened on mine....maybe yet or maybe just no. Dunno
5. I have no char or melting of the orange plastic of the chamber. But, I don't use a chamber reducer so don't know if that is relevant or not.
6. IMO, you can take an ISO swab to almost anything with metal to metal contact and get residue. For example, try it on any of the threads of a Ti GH. I myself am not worried about the AL Oxide and I don't see it just blowing into the air stream. Not on my unit. I would certainly NOT want AL particles and slivers from scratching that we saw in one poster's pics.
7. This may be a tough one to solve assuming that they are keeping the conduction portion of heating. This will require a contact surface between heater and chamber and I can't think of much that will transfer heat as effectively as AL, but I'm not a materials engineer. But even if made of SS, there will be metal to metal contact and hence metal to metal wear and hence some metal particulate creation.
8. It is for each and every one of us to make our own personal health decisions. To some of us, others seem...well, a bit of a hypochondriac. To others of us, some of us seem careless or blase. We each have to choose what perspective on material exposure we personally want to embrace and not try to convince others (on either side) our our rightness. Its just a personal decision and with that, I do plan to continue to use my Hybrid unless I see some degradation on my unit.