@cholash
There’s a link at the top of the topic describing the Pari boy go. Simply, the difference is that the [Pari Trek] uses jet compressor technology and the Pari Boy Go uses vibrating mesh technology. My experience is that compressor technology takes longer than the mesh. No tubes with vibrating mesh, only a mouth piece. And generally, vibrating mesh nebulizers are more expensive.

If your system works for you, especially while traveling, I would stick to that. In the past, I’ve tried disposable nebs which seemed to take forever. Is your experience different? What type of tubing do you use? How long does it take you to nebulizer 4 ML of saline?