Hi Robert,
I also needed to buy a nebulizer recently. Since insurance only buys a nebulizer compressor once every five years, I haven't wanted to use my insurance --saving them for when I want to buy something more expensive than a cheap neubilizer. I'm hoping that the e-flow will become the norm, so I am holding out for that.
I the meantime I weighed the pros and cons of all the nebulizer compressors. I bought a Pari-Trek II with battery pak for travel. But I like it so much I use it all the time. I think it nebs about .44mls per min. I liked that it's quiet and portable (a little slower that a tabletop) and a plus is that you use a Pari LC which you can boil. I wanted to travel light and take along Tobi, just in case I got sick. Although many people on this site have said it is not approved for Tobi -- I called Pari and they said the particle size would be correct, but it would take longer to nebulize. I got it on E-Bay new for $123.00.
I wanted a tabletop compressor too. So I just bought a Pari Proneb II. It is the nebulizer that most studies are done on. It nebs at .50 mls per minute. I bought it online. Compressor, case, 2 pari nebs for only $70. At the moment it is working great. Hopefully, it won't break any time soon.
I have an ultrasonic Omron Micro Air 22UV (something like that)that my insurance bought me years ago that I've never used because it seems too hard to clean.
The Aero-neb Go sounds interesting except you can't boil the neb (you can use Control III disinfectant) and you can't take Tobi in it. So maybe a good second compressor.
The fastest (other than an e-flow) and most expensive is the Mobile Air. The average nebulizer is 35psi (measures the air pressure). This unit is 50 psi. Extremely fast. And I think the rate is adjustable, but if you nebulize too fast you may compromise particle size and you may get less medication. It about $239 plus online. I'd let your insurance buy something like this.
I've had many Devilbiss models. They are really good, but I always thought they were noisy, and too large. But I'm sure the newer models are not like this. Also very cheap online.