I have been happy with the Phillips Respironics machine and I agree that it is sturdy. I have not experienced any problem with using the sodium chloride with this machine. The problem is that even if I wanted to just purchase another Respironics I can’t because I have been told that it has been discontinued. I was told this by the Phillips manufacturer. So now it looks like I have to try a nebulizer made by a different company. I’m glad you haven’t had any problems with yours. If it wasn’t for the sudden loudness when I use my machine I would not be looking for another one. I’m just afraid that this is an indicator that one day I will turn it on and it will not work.