Get the Koss! Today!
My feeling about compression is to go with the highest bitrate that you feel comfortable with the file size. If you are not a serious listener, (enjoy hearing as much detail, clarity, hidelity as posible) go lower. If you want to learn to “hear” the music & train your “ears” to hear even more, go with 320 kbps. Actually, for the latter, abandon MP3s, but practically speaking, your ears (brain) will learn to hear more & more in music if you provide it with high quality material. Having a good ear can be a curse, but,if you can afford good audio equipment, the joy you receive is immesurable. Choose phones, DAP, EQ settings that you enjoy. Don’t settle for cr!p sound & you will be happier. The Clip & KC75s are a step in the rght direction. You will be able to decide for yourself what “sounds good” once you listen for a while, then venture into higher priced canal phones or an amp/full siize headphone combo.
Enjoy the experience & get the KC75s today. BTW the Clip will not drive the KC75s to extreme volume levels, but I think it will be loud enough to enjoy.