Some thoughts, someone here said they are especially helpful with steroids. The medicine is more likely to go past your tongue, and thus lesson the risk of thrush mouth. Also, most have a whistle, to warn when breathing in to fast. All are non-electrostatic. Oh, by the way, they require a scrip??? I have used 3 different styles:AeroChamber plus Flow-Vu {hands down the best...$12 on the net; $45 from my local pharmacist}; Vortex, by Astra-Zenica {no mouth piece cover or whistle}; the "pocket spacer" given to me by my rehab {the mouth piece cover falls off, and the mouth piece broke}. One final note, when I called my pulmo - his staff said they weren't necessary. I disagree, I found that I frequently increase the time between need for my emergency inhaler, because it is more effective at delivering the medicene to to the lungs!

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