I've heard the same thing as Megan. My main neb is albuterol, mucomyst, and cromolyn sodium - which takes about a half hour to do. My second one is an anitbotic (Amikacin) but it only takes 5 minutes, so I'm not too worried about that one. It would be nice to be able to do the first one in 10 minutes...
I guess my wanting the e-flow is more for travel convience than time (I do my vest with the first neb, so I have to sit for a half hour anyway). I travel a lot back and forth (car and plane), and would love to be able to take this to a park or something to do instead of sitting in my car with the Trek for half an hour, or worrying about having a battery/electrical supply. --which I guess would support the compliance issue...