the price be great for I on these kind of headphone since I do not really want amazing sound like the one that cost 3-6x more . I have some trouble get they on , but that be because I never have one of these before and have no idea how you put they on , but after fiddle with they for 10 min I have they on . I plug they onto my zen m and pick a song with some bass in it . I take a pair of marshmallow headphone and ep-630 and compare they . the sound quality on these be not great like those , but definitely better than the one that come with you ipod or mp3 player . these of course do not fall off when you running , jogging , or move around . the ear size might be a slight problem for smaller ear people , but it should fit , but not as quite a firm\/perfect fit . comfort level be okay , you could feel they of course which I do not particularly like , but I do not think you can buy something like these without feel they on you ear , lol . these rest right outside you ear canal and the volume be alright . you can crank it up real loud or soft if you want . overall , these be great earphone if you look for a kind like these . they have ok sound quality for a cheap price , pretty comfy , and of course do not slip off .