Hello Linda, I have another question for you if you do not mind. I sent a question to NJH pulmonary nurse asking if they had a preference between the Pari and the Ombra. Her answer was that at NJH they use the Ombra compressor and the Pari nebulizer! I am not sure what she meant but it sounds like they use them together? I called and left a message for further clarification but not sure if I will get it. Just wondered if you happen to know about this possible combination or if you use it since you said you use the pari tubes with the Ombra.