I haveen't heard them but since your ears are unique to you alone, that free shipping, 30 day free trial, and a 100% refund guarantee pretty much begs one to try them in ones own home to see how they like them. That way you don't have to wonder if your tastes/opinions are the same as others who either liked them or hated them.
...just save all packaging and paperwork.
and, have you ever noticed that all speakers you listen to on youtube videos sound strangely just like your computer speakers?