A:Answer I cannot speak for the 100s. I chose the 200s, they do have a really well balanced sound and good range on both ends. The important step is adjusting the playing device output. Preset eqs have never sounded very good to me. So i put on my fav songs, and spent 10 minutes afjusting the eq setting on my phone. Then spent the next 10 jumping around, head banging, and agressively bouncing to try to shake them loose. They held nicely (8 / 10) which surprized me, because only my koss plugs have ever really held in my ears, and everything else falls out.