PREVIOUS HEADSETSHave recently tried a couple of other brand headphones (won't name them to allow people to make up their own minds) but they were not for me - primarily because one of them kept falling out of my ears. Note: They don't have earbud tips. It will always be challenging for manufacturers to succeed making a "one size fits all" earphone - I decided to return both the pairs.THE TOZO NC2.The Tozo NC2 thankfully, comes with earbud tips of varying sizes which means they create a seal and effect a very secure fitting and comfortable listening experience!The sound quality is significantly better than I was expecting! Somehow, the manufacturers manage to get some seriously full bodied and clean lows, yet manage to do so without too much compromising of the mid-range and top end frequencies (depending on the original mix of course). I've tried them across a range of genres. They are very well suited to modern productions of dance (e.g. house, drum & bass, R n B, pop etc..). There is some music that they could do with a touch more crispness at the top end (e.g. a few rock based tracks and some classical piano) but I haven't compared those same tracks with more expensive over the ear types so the jury is still out. Suffice to say though, that even there, it's definitely not disappointing. It's not to say these are "Studio quality" headphones BUT they are great sounding for the price and I would imagine that most would be more than happy.An added feature that's great value is what they call "Transparent mode". When you have well fitting ear buds, it will be difficult to hear your environment (e.g someone talking or there's a public address announcement etc) without removing at least one earphone. This feature (one tap to the left ear piece) switches on a mic which means you can hear your environment without removing the headphones (or even turning them down - depending on how loud they are).Removing at least one ear piece pauses the music which is another helpful function.The blurb says they can last eight hours on a charge. I've yet to test that but they certainly last longer than some I've had in the past!All in all, for the price, I really believe you cannot go far wrong with these. I've only had them one day but I like them that much that I thought I'd write a review now!... and no I'm not getting paid or any freebee's to write this :-). This is just one satisfied customer!