For the price, these are the best you can get. real metal used on these units. high quality feeling wires and comfortable ear tips. Comes with 4 extra pairs of ear tips so you can choose the one you like. I personally like the one that came installed on. I personally like these better than M6 series because ear loop things found on M6 are irritating. M9 series is the best they offer w/o ear loops. M9P comes with mic with on/off switch so you can do voice control and ipod controls with your iphone/ipod. These will be the perfect stressless carry-on earphones compared to other way cheap ones or way expensive logitech ones. I am glad I started using these and I bought 14 more after trying the first set.