My son needs the nebulizer only when he catches a cold. I don't want to take my home one on our trip to DL. Someon suggested the Omron CompAir Elite Compressor Nebulizer (NE-C21V? Anyone have experiences with this system...or can someone recommend a lightweight nebulizer. This asthma thing is really new to me so any help is appreciated? Also, where's the best place to buy online? Any suggestions on how to get insurance to pay for it?