We've had 3 Fit50s in our home for nearly 4 years and we have loved the positive effects of having them in our home. We sleep easier at night, we feel more refreshed in the morning. After about two weeks with the Fit50s I found that I was no longer waking up with an abundance phlegm in my throat and nasal cavities.

Fast forward to the 75i release, which I got three of to replace my Fit50s...

Same experience we had with the previous model but now it is quieter and moves more air using less energy. 

Could not be more pleased with our upgrade.

Way to go Alen!