I actually use both styles of fan. The airpath dries more carpet are per minute, but when you set it on the carpet you just cleaned, you have to fight the dents it makes in the carpet. After removing the airpath from the carpet, I usually pull up on the carpet strands to help smooth it out, but not always 100%. I expect that it would slowly become unoticable with a little time. Also, the dents can still be wet, as can a small area right underneath the fan, depending upon how long it is left in one spot.
The other thing is that sometimes on longer pile carpet, the wind can make a circle pattern from where the fan sat, and that won't come out either, at least while on the job, without rewetting. So it is best to move it around a little so it doesn't completely dry with the nap in that pattern.
The Airpath is not as easy to pick up and move around, and you need to be careful if you have it on a wood floor and decide to pick it up by the handle. The edge will hit the floor and can cause some minor damage. Of course I have the old original style fan, and the new
drieaz models may be better, I don't know.
I also use the turbo style fans for hall ways and when I don't want to set any thing back on the fresh cleaned carpet, depending on carpet style.
Loren