I bought a FIT50 shortly before buying a regular BreatheSmart. I have found that I prefer the FIT50 for these reasons: 1. The unit does not automatically come back on following a power outage. It just so happens that we have had two power outages since I received it. The FIT50 came back on right away, the BreatheSmart had to be turned on. Not a huge deal if I am here, but what if I was out of town? 2. The unit does not have a Lock button like the FIT50 does to prevent accidental button pushes say by a child. 3. The body of the unit is white, but the power cord is black. Tacky! On the FIT50, both are white.

The air purifiication seems fine, but I am disppointed that the more expensive unit actually has less features.