Amazon Market Place and Ebay have Sure SE310's from 155.00 to 170.00. Sound isolating is best. Cuts about 27db of background noise out without the need for batteries and is lighter and more mobile. Best sound pound for pound on the market today. These retail for 249.00 most places so to me spending a little bit more than 130.00 is money very well spent. 110's or even 210's that are, perhaps, more in line with your budget do not sound near as good as these.