I bought both the fan from costo and the sharp purifier from fs.
The fan is good. The only complain so far would be even in the sleep wind mode, it is still quite strong. I like the design and everything.
I originally bought the purifier from costo and it had similar design to the fan. It was Honeywell. I bought the sharp one last night and after one of comparison, I found out
1. the sharp one covers more area and it is more effective on the paper.
2. the sharp one has remote control.
3. the sharp one can be placed by the wall.
I will return the costo one tomorrow after I did more test today.
I got my sharp air purifier too...need to go to the 3rd future shop to get one...
So far I have no complain...very quiet, and I have less allergy..(maybe just 心理作用?)