I know the title is an oxymoron. What I'm looking for is an in-ear headphone that won't fall out (earbuds fall out of my ears) that sounds like a good IEM, but does not block external sound. I'm used to the Etymotic sound signature (ER4P, ER6i, MC5). I am trying to turn over a new leaf and be more socialble, which is impossible when you don't know that people are talking to you unless you are looking right at them. I will be wearing them in the gym. I'd like to keep it under $100 US, under $50 would be better still. They have to sound good but not great. Any suggestions?