Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great if one considers the low price.

Yes my Sennheiser 500 series over the ear headphone sound better but they are also $300 and strain the iPod amplifier to the max. The Sony MDR-EX81LP's are the best bang for your buck for something small and portable. They are great for the gym or the outdoors and are perfect for short travel. I think the bad reviewers have not figured out that these are "In the ear headphones" and have to sit inside your ear canal to work properly. If you wear these headphones loosely over your ear (like the headphones that come with iPod) they will not reproduce the bass correctly. As long as you wear them properly (inside your ear with the right size adapter) the frequency response is very satisfying. Good bass and good treble. Typically in the ear type headphone are not made for hours of listening. For long listening sessions I like to wear over the ear headphones with velour ear pads.