@lindam272 Hi, I use the Pari Eflow (2.5 years) and it is fantastic, silent, quick (10 mins for my saline) , compact and easy to use or take away. You do have to buy a replacement part 6mthly-yearly to keep it up to speed which is expected for these. I would really recommend one of these. Just make sure you clean it really well. This was part of my kit when I was in the Amakacin trials and they said it was the best on the market.