As you are researching, consider if treatment data (not just compliance data), plans to use it for travel, means of
battery backup, exhalation relief, and having an option of being auto titrating are important to you. While I love my bells and whistles, I kinda feel that it's like the cars these days - so much more to go wrong than in the old no-frills days.
In the meantime, congratulations on getting such a reliable machine.