I recently purchase the Porta pro headphone and I be very satisfied . I work as a engineer in a office , so listen to music on my headphone be the only escape I have from the surround b . I wear they for long period of time work 10-14 hour day . the adjustable temple pad and lightweight design make they easy to wear all day without discomfort . I wear glass and this be the first pair of headphone I have be able to wear all day without be irritated by they . they also have a acceptable sound quality with decent bass response for such a small light-weight pair of headphone . two minor complaint : 1 -rrb- the plastic slide adjuster like to take hair with it from time to time when I adjust they on my head . I 'll let you know when it create a bald spot . 2 -rrb- when I get a phone call I use to always slide my headphone down on my kneck . these auto adjust - so when you slide they down on you kneck they auto adjust and be kind of tight and uncomfortable . I have have to get use to just take they off when I get a call or interuption . I recommend these headphone for sound quality and all day comfort .