So these are about the same price. which of these is better?
http://www.amazon.com/gp/product/B003XU73KY/ref=ox_sc_sfl_title_1?ie=UTF8&m=ATVPDKIKX0DER
http://www.amazon.com/gp/product/B004J6BIJ8/ref=ox_sc_sfl_title_2?ie=UTF8&m=ATVPDKIKX0DER
http://www.amazon.com/gp/product/B003XU73KY/ref=ox_sc_sfl_title_1?ie=UTF8&m=ATVPDKIKX0DER
http://www.amazon.com/gp/product/B004J6BIJ8/ref=ox_sc_sfl_title_2?ie=UTF8&m=ATVPDKIKX0DER