Hi! I have headphones at home, Sennheisser RS 45. I am really satisfied with them. Now, I want to buy some good headphones, but now to use at work. Since I share my office, I'd like closed ones, then I won't disturbed my mates. I tell about the ones I have at home, because that can give you a hint about the quality I am looking for. At the same time, I must say that I will be pluging them on my laptop, a Dell Inspiron, so I might go for something lower in quality (and price), since the source will be limiting the available fidelity of the sound... Oh, and btw, I don't want them wireless, because I will be using them for hours everyday, so I can't have enough batteries... I guess. If I am wrong in this point, let me know... The battery of the Sennh. RS 45 I have at home lasts only for around 2 hours [but I have certainly used them at a fair high volume level, maybe at low one they'd last enough?], and I work daily quite longer... Moreover, it takes 14 hours to charge... What would you suggest? Thanks.