I say that SAY and THRM are my choices.
No one is obliged to follow. Nowadays as the tests are different and vaccination brings as many questions as answers, it is clear that the tests are here to stay and everyone knows it. So I have these 2 companies in my portfolio to meet the various needs. I am confident that THRM and SAY will succeed in their respective niche markets. I'm IN so I don't miss the boat.