I would want the air flow adjustment...get the kayfun, if your not sure about genesis style atty's get a cheaper one to play with first to see if you like it. they are not for everyone.
as for the KF i would pick the light or light + over the 3.1
Hmm... lots to contemplate here. I guess I didn't realize that there was THAT big a difference between the two. I do like the idea of the airflow adjustment on the KF which I didn't see on the lite which is why I ruled that one out. I suppose I should start with a cheapy of both and rethink this whole thing before dumping that much money into something that I may not like. Both is not an option.. at least not yet anyway with the holidays coming up. Does anyone know where you can get a cheaper clone/similar setup for each?