Koyo throwout bearing question

Does a Koyo throwout bearing have any difference than regular ones? i'm gonna by a stock Exedy clutch kit on eBay (can't afford anything more at the moment) and one is 105.99 and says it has a Koyo throwout bearing, where the other which is 97.00 does not say any brands, just throwout bearing.
here are the two i am lookin at:
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33730&item=2404166218&rd=1 105.99 one
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2510082207&category=11889 97.00 one

The throwout bearings are all the same to me....go with the cheaper kit.