Changes

And then there is compliance, min of 4 hrs use for 21 of 30 days, easy since you are going to use this every day for a number of years.

You need to check with the insurance company who provides your coverage. For example, if you check the Medicare site, your only choice may be Apria. My Addvantage plan provides coverage from four different DMEs. Lincare was chosen, which could not be used with conventional Medicare.