@turnbacktheclock & @detsdum - I am always "on the go" traveling chasing after grandkids, going to meetings... so I opted for the handheld (impeller type) nebulizer. My current one is the Philips Innospire Go. I'm not sure if it is currently available - it was on backorder for most of the summer. Of the handheld ones, it was my daughter's favorite, so I chose it as well, and it works well for me.

Which is better, compressor or impeller style? That depends - for sheer reliability & long life, you can't beat the old (and still sold) Pari Vios. But it is loud, and not convenient for hauling around because it is larger & plug-in only. And it's cheap & covered by Medicare Part B & most insurance. The impeller ones are lighter, quieter, battery operated or rechargeable, and tend to be more expensive. On average they only last a year or two.

As for output, the impellers are faster, which is important to an impatient person like me. I wish they would have been around for my kids. They also seem to make smaller droplets. But both will put out all the medicine and do the job.

So, if I was a homebody and had a convenient place to set up a Pari & use it without having to move it, I would probably be satisfied with it. As it is, I keep my "old green machine around as a backup. Also, if you are in a household where more than one person nebs, each person has to have their own handheld. But with the compressor machine, you just switch hose/cup/mouthpiece between users.

I'm sure others will weigh in here with their experiences.
Sue