We have had it for 2 years, we are very satisfied, we often leave it on automatic for days, on the low setting it is almost silent while when it detects dust and increases its intensity you can hear it but you get used to it. In a house of about 80 square meters, in some difficult cases like after frying when there is a very strong smell in the air (even fog from the smoke) turning it on starts to show the difference immediately in the first 5 minutes while after half an hour we can say that the atmosphere is clean. It is a bit bulky, I don't know if other filters are smaller. However, it is quite effective, I haven't tried others to compare.

The device instead of emitting clean air was giving off a bad smell. The manual stated that if it emits an unpleasant odor, the filters need to be changed. But the device was new and when I received it, it was in sealed packaging. At first, they told me to run it for 2-3 hours near an open window to let the plastic smell dissipate. I did that, but it still continued to emit the bad smell. In the end, I requested a refund.

It is very good and cleans the air of the space very well, it has a slight smell not unpleasant, the air that comes out, but it is probably from the filters that are new.
Relatively quiet on the medium and low settings.
I have recommended it to friends.
Be careful, when you buy it to check the packaging to be factory sealed, otherwise ask to check that everything is inside, and that they didn't give you a used one.
I have experienced this but I won't mention where I got it from, even though I should, so that we don't get treated like Americans.
I am returning after some time of use, it is finally very good, the slight smell I mentioned at the beginning was actually from the new filters it had, after a few days of use everything is fine, I recommend it.

It does what it promises, at the high level it sounds quite a bit but still within normal limits. Very easy to operate and the remote control covers all the settings. I highly recommend it especially for smokers!

Excellent!!! The atmosphere has cleared. No more smoke and unpleasant smell, mainly from cigarettes inside the house. It's a bit expensive, but it's worth every euro to live in a clean environment as a smoker. With about 125 euros consumption per year (if I did the calculations correctly), the cost is not excessive to have a clean atmosphere in your home. ((The measurement is for 24-hour operation every day of the year)).

The R-9600 Air Ionizer-Cleaner saved me...with my wife smoking inside the house and having a pet inside, the air I was breathing was very polluted...the large capacity to clean the air very quickly in the space and the sensor that continuously shows the air quality makes it amazing!!! I definitely recommend it!!!