So far impressed with size but not much else

The noise is as bad as people say! LOL.
My normal setup is AirSense 10 with P10 pillows.
On the AIrMini, when inhaling, sounds similar to the amount of noise that my normal P10 makes when pulled away from my face. Yes it's that loud! When exhaling it's pretty quiet.
We will see if I can sleep with it tonight and what my impressions of the HumidX are.
I have had a hard time visualizing the size of the thing. Here are some comparison pictures with my AirSense 10.
The AirMini itself is similar in size to the power brick for the AirSense 10. If you are trying to figure out how much space this would take in luggage, imagine the AirSense 10 power cord (Brick and the extra cord) and you'll be pretty close.
Picture 2 is showing AirSense 10 power brick and "cord" on the left, and the AirMini unit and its power cord on right.
If you have questions ask away. Unfortunately I think this will be going back and I'll be hauling the AirSense 10 around until ResMed sorts out a better way to muffle airflow.
(Forgive the highly compressed images - just what it took to get them to upload here)