LOGO experiment

Well here I am again… trying to be a better designer so I decided to show my experiment with logo variations. The concept is simple , I made up a company called fluff and did some variations on the logo. I would like some critiques and hopefully I will make this into something to put in my portfolio… Yes there are different ideas but what I want to convey is a n idea for a company that is light, yet always flowing… I want to show"fluff" is cool … Yeah it is like design for design sake…but I want to improve…