What is least favorable is the sole; whatever it is made of, it is slippery on most surfaces. Odd spacing holes so limits attachments. I?ve used these for about 3 weeks now and feel I can give a good review. KlangZum Klang kann ich nur sagen, dass ich diesen absolut hervorragend finde. This is my second Vasagle cabinet. solo puedo usarlo en fingergrip, pues en palm es molesto. Another downside is that this product can be rather difficult to assemble. I thought that my experience was unusual until I read the rest of the reviews here. 4) The microphone works well (more about this later)Not so gooda) My son feels that the non-cancellation ability of this Headphones is not as good as that of the NUBWO 12 he had excellent use of for 15months, possibly because the ear-cups on this new Headset are not as big. I am very happy.