I went with the D4 ERA's from Signal Path. Great sound and unbelievable bass from a small speaker. They also come in a smaller and larger version depending on your needs. Check them out at the link below. Good Luck.
http://www.signalpathint.com/index.php?option=com_content&task=blogcategory&id=16&Itemid=36
http://www.signalpathint.com/index.php?option=com_content&task=blogcategory&id=16&Itemid=36