For those of you nebulizing GSH I wanted to give you this info b/c I would have greatly appreciated this info 2 years ago. We purchased a DeVilbiss Compressor last week and it has cut our nebulizing time almost in half. And it is FDA approved to be used with Tobi so it is fine to use with Hypertonic Saline and GSH. It is much quieter than the Pari Proneb Compressor and faster. They run about $200 but should be coverd by insurance as long as you haven't bought a compressor within 2-3 years.