I use my iFrogz almost every day at work. I work in a call center, so it's important to me that my ear buds block out background noise. These do that perfectly. They are comfortable in my ears for long periods of time.
Got these for my daughter to use at school, they work better for my ear size though so I kept them. The sound quality is good and when kept away from the kids I'm able see they are worth the cost and durable.