I use both the Aerobika and the Acapella devices. I haven't tried the AirPhysio. To me, it is a matter of personal preference, and I like the feel of the Aerobika better. But I keep the Acapella in my car (clean & bagged) for those times when I am on the run and have a few minutes to do clearance.
I feel that the vibration helps break loose stubborn mucus when I am producing a lot, but huff coughing plus 7% saline nebs are as effective for me most of the time. My routine - move around (house chores that involve bending, stretches, brisk walk and/or yoga/chair yoga) then neb and do airway clearance. Bending from the waist also helps bring up mucus for me.
This has worked for me both during MAC and after, I add more rigorous nebs & clearance if my asthma is bad or I have a virus/cough/cold. My devices are due for replacement after getting good use for 4 years now... In 2 1/2 years, I have only had 2 short exacerbations that required extra meds for a short time.

Can you tell me a bit about your diagnosis & history? Do you have MAC and Bronchiectasis?
Sue

Hi @melissaf, I'd like to add my welcome. I moved your question to this existing discussion where @donsasen asked a similar question:
- Is it worth buying an OPEP device for sputum clearance for COPD? https://connect.mayoclinic.org/discussion/opep-and-copd-stage-3-worth-purchse/

The discussion now appears in both the COPD group and the MAC group. I did this so that you can continue to get experiences from members like @sueinmn as well as see previous posts.