What woud the real difference in quality be between the real hipshot hardtail or a knock off such as this one:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=3781878495&ssPageName=STRK:MEWA:IT
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=3781878495&ssPageName=STRK:MEWA:IT