Thanks.
I have learned a few things in these days
1) Continuous vs pulse flow. Mayo measures only with continuous flow which they consider the gold standard.
Light weight portables are pulse flow. A continuous flow portable would weigh more and I would have to drag something. For now I can get by with pulse flow, if I should worsen, I may need continuous flow, because pulse flow cannot deliver same amount. I need 2L/min continuous flow and that is not the same as 2 on a pulse flow.. I would sell my Inogen in that case.
2) I am covered under Medicare, but if I go through Medicare, I do not know what the provider will give me, certainly not a new model. But Medicare says it will cover maintenance if I buy my own unit. I will have to figure out how to do this.
3) I bought the new Inogen Rov 6 directly from Inogen. I will need to test it to see if it gives me 90%+ oxygen saturation when I exercise...using my home oximeter. If not I need to return in 30 days
4) I also need night oxygen, and I will go through Medicare for that so no cost for me. And if I am travelling I can use the Inogen for night oxygen