They are straight up fantastic! They have an adjustable nozzle that can be moved to fit your ear shape. Which is straight up wonderful. they come with so many tips, they just assure a GREAT fit and an extremely comfortable listening factor. The isolation is way above par for a dynamic driver. I actually just got back from a 28 mile ride on my road bike with ridiculously fast winds and I didn't lose quality while riding. The burn-in factor is ridiculous on the gr07. I refuse to burn them in without me listening. The bass starts to become punchier, everything blends. The Vsonic gr07, ie80, and Future Sonic Atrio m5, are the only headphones ive ever listened to where I thought the heavens opened up with sound. The Vsonic gr07 being my favorite. Because there is NOTHING that can beat their price! The bass gets low, punchy, and mellows out a lot as you listen. I use the gr07's for classical, hip-hop, gangsta rap, alternative, indie rock. It outperforms some major armatures in my opinion. Its just surprising how a dynamic diaphragm can have such a nice audio range. The mids are warm and the highs are crystal clear.