Sony MDR-E829V or Sennheiser MX 660. Inexpensive, inline volume control, both sound great and if you snag one and lose a channel, it's not a financial hardship to replace. Both also let you hear enough background noise to stay out of trouble (ie,. traffic, cyclists...). I prefer the Sony for it's better bass response. I like to think the point of diminishing returns starts at about this point.