EDIT:   I've been using the Q 350s for some days now and after experimenting with the so called, seals, I was really impressed with how important actually is to choose the rights ones for your ears. After your responds (and I thank you for those) I came to conclude though, no pair of included cushions was good enough for my ears, so I used another 's brand cushions which suited me fine.   Now I have to say that I'm very pleased with my Q 350s , bass sounds right, depth is fine, highs are fine and the volume is just fine as well. So I'm gonna...