Buying a second used machine for travel

[AZSleepDprived]

While not my fav machine, I use a Z-1 whenever traveling.  You'll get used to the sound.  The main difference is the lack of humidification.  I will admit, I haven't tried those little humidification modules that you connect to your tubing...   I built a lithium battery pack so I could take it camping from time to time.   Those travel cpaps are expensive, especially when you may only use them a few times a year.