Can't wait to try them. They will be used for travel and outside chores. As for my tastes I have had several grado headphone I am very happy with sound. I do not use them as much as I did in the old days of college. I still prefer cornwalls, tube power and vinyl to any headphone setup. How is the effiecency? I have noticed that I tend to listen to in-earphones pretty high in the volume range on my ipod classic.