My rt came over so I could try out the Medium and Large Nasal AireII prongs. WHAT A DIFFERENCE! It went from Niagara Falls sound effects to a whisper....So comfortable too, once it was in my nose (I used saline spray and a little ky jelly) and warmed up. I had the best sleep I've had in years and breathing in the morning was refreshing as I woke up w/the NA on. Feel so relieved! Still will need to see what rt gets from smart card in a couple weeks and see if she still thinks I should have another sleep study for the purpose of titration for a bilevel. Might be taking the auto resp on the road, take a ferry over to Kelleys Island and do an overnight campout if the weather cooperates next week. Terry